Search the Maryland Phone Directory

How to Find Phone Numbers in Maryland

There is no single book that holds every phone number in Maryland. The state runs one directory for its own employees, and everything else sits with the office that owns it. The Maryland Statewide Directory is the broadest starting point. It searches state employees by name and by agency, and it returns a work phone number and email. The Maryland Manual, published by the State Archives, is the other broad tool. It indexes state agencies, all 23 counties, Baltimore City, municipalities, courts, and the university system in one place. Between those two, most government numbers in Maryland are two or three clicks away.

Which one you open depends on what you are after. A named state worker is a directory search. An office you cannot name yet is a Manual search. A county service, a trash pickup, or a pothole is a local call, and several Maryland counties answer those on 311 rather than a switchboard.

1. Search a state employee by last name in the Maryland Statewide Directory.
2. Browse the Maryland Manual when you know the topic but not the office.
3. Open the Maryland.gov agency list for a cabinet department's own contact page.
4. Go to the county or town site for anything local, or dial 311 where the county offers it.
5. File a Public Information Act request with the agency when a number is not published at all.

The Statewide Directory sits at doit.state.md.us/phonebook and is free to use with no login.

Three fields do all the work here, and none of them are required on their own. A last name alone is usually enough. The same page carries a TTY Directory link and a Request an Update link for corrections.

Area Codes Serving Maryland

Six area codes are active in Maryland, and they fall into two groups. The 227, 240, and 301 group covers western Maryland, southern Maryland, and the Maryland suburbs of Washington. The 410, 443, and 667 group covers Baltimore, central Maryland, the Annapolis area, and the Eastern Shore. Inside each group the codes share exactly the same ground. A new 667 line can land on the same street as an old 410 line. That is what an overlay means, and it is why every code in the state carries the same dialing rule.

Area code 301 came first, in 1947, when it covered the whole state. Everything since has been a response to running short of numbers. The newest code, 227, opened in June 2023 over the same territory as 240 and 301.

The per-code detail, including which counties sit in which group and what happens when the codes run low again, is laid out on the Maryland phone area codes page.

Public Safety Phone Numbers in Maryland

Maryland routes emergencies through 911 and everything short of an emergency through several other short numbers. The split matters. A crash with injuries is a 911 call. A mental health crisis is a 988 call, and the Maryland Department of Health says 988 handles substance use crises too. A question about food, rent, or a utility bill is a 211 call. A pothole or a missed pickup is a county matter, and in some counties that means 311.

State Police handle highways and the counties without their own force. Headquarters answers at 410-486-3101 from Pikesville, but the barrack that serves your county is the better call for anything routine. There are 23 of them, from Cumberland out west to Princess Anne on the lower shore.

The Maryland State Police contact directory lists every barrack and unit with a main line, a fax, and an email.

Search by name or filter by division. The results run 79 entries deep and include the Aviation Command, the Criminal Investigation Bureau, and the Licensing Division alongside the barracks.

Other statewide safety lines are worth keeping handy. Child and adult abuse reports go to 1-800-917-7383. Missing person alerts run through the Maryland Center for Missing and Unidentified Persons at 1-800-637-5437. Human trafficking tips go to 1-888-373-7888. For a sexual assault, RAINN answers at 800-656-4673.

Maryland State Government Phone Directory

State government is where the Maryland phone directory is most organized. Every cabinet department has a public contact page, and the Statewide Directory reaches individual staff. The agencies people call most are the Motor Vehicle Administration at 410-768-7000, the Attorney General's Consumer Protection Division at 410-528-8662, and the Public Service Commission's Consumer Affairs staff at 410-767-8028. Unemployment claims run through the Department of Labor at 667-207-6520. Property assessment questions go to SDAT at 410-767-1184, or 1-888-246-5941 if you are calling from outside the Baltimore metro area.

Relay service shows up on almost every state contact page. Dial 711 and a relay operator bridges the call for a caller who is deaf, hard of hearing, or has a speech disability. Several agencies also list 1-800-735-2258 as a direct relay number.

The full agency list, including the elected offices and the smaller commissions, sits on Maryland.gov.

Each entry links straight to that agency's own site, which is usually where the current program phone numbers live.

County and Local Phone Directories

Maryland has 23 counties plus Baltimore City, which is not part of Baltimore County and runs its own government. Local numbers are where a statewide search usually ends up, because counties handle permits, property tax bills, health clinics, social services, and local police. The Maryland Manual keeps an index of all of them. From there you land on the county's own site, and the depth varies a lot by county.

Montgomery County has the strongest county directory in the state. Its employee phone book searches by first name, last name, and department, and the department list runs from Alcohol Beverage Services through Zoning and Administrative Hearings. You need at least one letter in a name field to run it. Frederick County, Prince George's County, and St. Mary's County publish staff directories of their own. Carroll County answers on a single main line at 410-386-2085.

Several counties answer service requests on 311 instead of a switchboard, and each publishes a 10-digit number for callers outside the county line:

• Baltimore City - 311, or 443-263-2220 from outside the city, 6 a.m. to 10 p.m. daily
• Montgomery County - MC311, or 240-777-0311
• Prince George's County - PGC311, or 301-883-4748
• Anne Arundel County - 311, or 410-222-7000
• Baltimore County - 311, or 410-887-0311

Cities and towns are a separate layer again. The Maryland Municipal League directory is the fallback for those.

Search by municipality or by organization to reach a town hall that is too small to appear in the county directory.

Maryland School and Library Directories

Education is the deepest slice of the Maryland phone directory. The Maryland State Department of Education answers at 410-767-0100 and publishes a staff directory that lists last name, first name, job title, division, email, and office phone. It also keeps the list of all 24 local school systems, one for each county plus Baltimore City, with the superintendent, the mailing address, and a main number for each.

District directories go deeper than the state list. Montgomery County Public Schools runs a staff search that accepts a last name, a first name, an office or school, a position, and a phone number. Searching by phone number is unusual for a school system, and it is useful in reverse: a strange call from a school line can often be traced back through it. AskMCPS answers general questions at 240-740-3000, with a Spanish line at 240-740-2845.

• Maryland State Department of Education - 410-767-0100, staff directory
• Baltimore City Public Schools - 443-984-2000, with a staff search that updates itself
• Baltimore County Public Schools - 443-809-4554, office directory by department
• Montgomery County Public Schools - 240-740-3000, advanced staff search
• University System of Maryland - one employee directory covering every campus
• University of Maryland - campus information at 301-405-1000

Libraries have their own statewide directory. The Maryland Public Library Directory lists every county system plus the regional systems and the Enoch Pratt Free Library, with staff contacts under each.

Maryland Utility Phone Numbers

Utility numbers split two ways, and mixing them up wastes time. Outage and leak lines are staffed around the clock. Billing and account lines keep office hours. A gas smell is never a customer service call. Washington Gas tells customers to dial 911 first and then report the leak. Before any digging, the call is 811, which reaches Miss Utility.

Miss Utility splits Maryland by shore. Western Shore locate requests go to 800-257-7777 and Eastern Shore requests go to 800-441-8355. Regular tickets run on business days from 7 a.m. to 5 p.m., and a Maryland ticket stays alive for 12 full business days. Emergency locates are taken at any hour.

Utility complaints have a state backstop. The Public Service Commission takes them at psc.maryland.gov or by phone.

One limit is worth knowing before you call. The Commission covers electric, gas, and landline telephone service, but not wireless, cable, or internet.

Transit rounds out the infrastructure list. MDOT MTA answers transit questions at 410-539-5000 or 1-866-743-3682, with a TTY line at 410-539-3497. State highway questions go to 410-545-0300.

Health and Social Services Numbers in Maryland

211 Maryland is the front door for social services in this state. It is free, it is confidential, it runs every day of the year, and it offers translation in more than 150 languages. Callers use it for food, housing, utility assistance, child care, legal help, veterans benefits, and aging services. The Department of Human Services handles the programs themselves at 1-800-332-6347, with a local office in every county.

The Maryland Department of Health answers at 410-767-6500 from 201 West Preston Street in Baltimore. WIC has its own line at 800-242-4942. The Department of Aging answers at 410-767-1100 and keeps a directory of the Area Agencies on Aging that serve each part of the state.

Hospitals and veterans care are listed separately. The University of Maryland Medical Center switchboard is 410-328-8667. UM Capital Region Health in Prince George's County answers at 240-677-1000. The VA Maryland Health Care System runs VA Health Connect at 855-679-0250, with the Baltimore VA at 410-605-7000.

Court and Legal Phone Numbers in Maryland

Court phone numbers follow the courthouse, not the state. Maryland runs appellate courts, circuit courts in every county, district courts across 12 districts, and orphans' courts. A question about a case goes to the clerk where the case was filed. The Judiciary keeps one directory that covers all of them.

Circuit clerk numbers are the ones people ask for most, since marriage licenses and case records live there. Baltimore City answers at 410-333-3733, Anne Arundel at 410-222-1397, Montgomery at 240-777-9400, Prince George's at 301-952-3318, Howard at 410-313-2111, and Allegany at 301-777-5923.

The Maryland Courts directory maps every courthouse to its own contact page.

Legal help sits outside the clerk's office. The Maryland Court Help Center takes free questions at 410-260-1392, Maryland Legal Aid answers at 410-951-7750 or 1-888-465-2468, and the Office of the Public Defender answers at 1-877-430-5187.

Looking Up an Unknown Maryland Number

An unknown Maryland number usually gets checked in the wrong order. People start with a name search and end up with a stale answer. Start with the area code instead. If a caller claims to be a state office, the Statewide Directory or the agency's own page will confirm the real number in seconds. Only after that is a commercial lookup worth running, and even then the answer is a clue rather than proof.

Number portability is the reason official tools stay vague. A Maryland number that started on a Verizon landline in Gaithersburg can be carried to a mobile or an internet line and still keep its digits. The full walkthrough, including how each tool behaves, is on the Maryland phone numbers page.

Scam Calls and How to Report Them

The scam calls hitting Maryland follow a few patterns. Jury duty is the big one. A caller claims to be a court officer, a sheriff, or a U.S. Marshal, says you missed jury service, and demands cash, gift cards, or crypto to avoid arrest. The U.S. District Court for Maryland put out an alert about it in February 2026. Fake court and toll texts are the other wave. The Maryland Judiciary warned in March 2026 that courts never ask for payment or personal details by text, phone, or email.

Utility shutoff threats show up in the same way, with a caller claiming to be BGE, Pepco, or Washington Gas. Neighbor spoofing makes all of it worse, because the caller ID shows a local Maryland prefix that looks like someone down the street. The Attorney General noted in July 2026 that scammers now buy real phone numbers and cycle through them, instead of only faking caller ID.

Reports go to more than one place. Robocalls and spoofing go to the FCC and the FTC. Maryland consumer fraud goes to the Attorney General's Consumer Protection Division at 410-528-8662 or 1-888-743-0023.

The same page carries the hate crimes line and the medical billing help line, which are easy to miss under the main consumer number.

Community Phone Resources Across Maryland

Plenty of useful Maryland numbers sit outside government. 211 Maryland alone holds more than 7,500 listings and has a searchable database behind the phone line. Immigrants and new arrivals get a dedicated path through it, with translation in over 150 languages.

The 211 Maryland database can be searched by keyword or topic without calling at all.

Topic tiles cover housing, food, domestic violence, utility assistance, employment, and legal help, and results can be narrowed to your own location.

Other community lines worth saving: the Pride Center of Maryland at 844-774-3363, the Maryland Chamber of Commerce at 410-269-0642, and Visit Maryland travel assistance at 877-333-4455. County tourism offices publish their own, such as Howard County at 410-313-1900 and Dorchester County at 410-228-1000.

Phone Numbering Basics for Maryland

Every Maryland number follows the same shape: a three-digit area code, a three-digit prefix, then four digits. The whole state sits inside the North American Numbering Plan under country code +1. Local calls take all 10 digits. Toll calls take 1 plus the 10 digits. Calls out of the country start with 011 from a landline, or the plus sign from a mobile.

NPA

Numbering Plan Area, the three-digit area code at the front of the number.

NXX

The central office code, meaning the three digits right after the area code.

Overlay

A second or third area code laid over the same ground, which forces 10-digit dialing.

Rate center

The billing area a prefix belongs to, such as Baltimore, Towson, Frederick, or Salisbury.

NANP

The shared +1 numbering plan covering the United States, Canada, and 23 other territories.

Short codes work differently. The three-digit service numbers, the star codes on a landline, and the toll-free prefixes each follow their own rules, and none of them are tied to Maryland geography.

Phone Service History in Maryland

Maryland phone service traces back to the Chesapeake and Potomac Telephone Company, which began in the Baltimore area in the 1880s. C&P was the Bell company here for most of a century. After the Bell System broke up in 1984, it ended up under Bell Atlantic, and Bell Atlantic became Verizon in 2000. Baltimore still has the buildings from that era, including an Art Deco telephone exchange downtown.

The numbering story is shorter. Maryland got one area code in 1947 and kept it for 44 years. Growth around Baltimore and the Washington suburbs, plus fax machines and pagers, finally forced a change. 410 split off in October 1991. Two overlays followed in June 1997, one on each side of the state. That is why Maryland residents got used to dialing 10 digits long before most of the country did. 667 arrived in 2012 and 227 in 2023.

Recent Phone News in Maryland

Three things have moved recently. The Attorney General joined other states in July 2026 asking the FCC for tighter robocall rules, including stronger checks on resellers and limits on number cycling. The release put the national damage at roughly 29.6 billion scam calls and texts and close to two billion dollars lost in a year. Separately, the FCC proposed caller ID changes in December 2025 that would add verified caller names and flag foreign-origin calls.

On the numbering side, nothing new is coming soon. Projections from April 2026 put the 410, 443, and 667 group running out around 2036, and the 227, 240, and 301 group around 2041. No seventh Maryland area code has been assigned.

Frequently Asked Questions

Do I have to dial 10 digits in Maryland?

Yes, everywhere in the state. Both halves of Maryland use overlay area codes, which means two homes on the same block can share the same seven digits under different codes. Local calls take the area code plus the seven-digit number. Toll calls take 1 first. The rule has been in place in the 240 and 301 region since 1997, and the arrival of 227 in 2023 changed nothing about it.

Which area code covers my part of Maryland?

It depends on which side of the state you are on. Allegany, Garrett, Washington, Montgomery, Prince George's, Charles, and St. Mary's counties sit in the 227, 240, and 301 group, along with parts of Frederick, Howard, Carroll, and Anne Arundel. Baltimore City, Baltimore County, Harford, Calvert, and the Eastern Shore counties sit in the 410, 443, and 667 group. New numbers in either area can be assigned any code from that group.

How do I find a Maryland state employee's phone number?

Use the Statewide Directory run by the Department of Information Technology. Enter a last name, add a first name or an agency if the name is common, and submit. The result gives a work phone and an email. Personal mobile numbers and home addresses are not in there. If the person's office is not obvious, the Maryland Manual will tell you which agency they belong to first.

What do I call for something that is not an emergency?

It depends on who owns the problem. County service requests go to 311 in Baltimore City, Montgomery, Prince George's, Anne Arundel, and Baltimore County, or to the county's main number elsewhere. A non-emergency police matter goes to the local department or to the State Police barrack serving that county. Utility outages go to the utility's own outage line, not to 911.

How do I check an unknown Maryland number?

Verify before you search. If the caller claims to be from a state agency, look up that agency's real number and call it back yourself. Never dial a callback number the caller supplies. If you only want to know whether a number is a known nuisance, a commercial lookup may show a spam reputation. Keep in mind that a Maryland area code proves nothing about where the caller actually is.

Where do I report a scam call in Maryland?

Unwanted calls and spoofing go to the FCC Consumer Complaint Center and to the Do Not Call Registry. Fraud that cost you money goes to the Maryland Attorney General's Consumer Protection Division at 410-528-8662. Landline service problems, and only landline, go to the Public Service Commission at 410-767-8028. For a jury duty scam, the court points people to the FBI Maryland Field Office at 410-265-8080.