Post Office Services in the District of Columbia: One City, No County Lines

The District of Columbia is unusual among U.S. jurisdictions. It has no state government, no rural counties, and no separate county seat. Yet residents still need somewhere to buy stamps, ship packages, and collect held parcels. Our directory lists 55 post office records for the District. All of them are in Washington, and all are filed under District of Columbia County, the label federal datasets use for the single jurisdiction.

That concentration changes how you choose an office. In most states the first question is which town. Here it is which quadrant and which neighborhood. Washington is divided into Northwest, Northeast, Southeast and Southwest, with the U.S. Capitol at the center, and every street address carries one of those suffixes. A trip to 4211 9th Street Northwest is a very different errand from a trip to 3937 Minnesota Avenue Northeast, even though both are in the same city.

This page explains how post office services are organised across the District, which offices serve which parts of town, and what to prepare before you leave home. For the full list of locations, see the District of Columbia County page, which gathers every listing in one place.

The city is compact, so distances are short. Traffic, limited parking, and federal security checkpoints can still turn a simple errand into a long one. Planning around those factors saves more time than picking the nearest dot on a map.

Who Runs Post Offices in the District: USPS, Not City Hall

Post offices in the District are not run by the D.C. government, and there is no local postal agency to call. The United States Postal Service is an independent agency of the federal executive branch, restructured by the Postal Reorganization Act of 1970. A Board of Governors and a Postmaster General oversee it, and the Postal Regulatory Commission reviews rates and service standards. Congress sets the broad legal framework.

For you, this means the rules in Washington are the same as in any other city. Postage prices, mailing standards, money order limits, and passport acceptance procedures are national. The District government handles other services, such as driver licensing through the Department of Motor Vehicles, but it does not set mail policy or staff post offices. If a clerk tells you something is a national rule, it almost always is.

The District also has an unusual place in Congress. Residents elect a non-voting delegate to the House of Representatives, and that office can be a useful contact when a mail problem drags on. Congressional caseworkers can ask USPS headquarters to look into lost mail or repeated missed deliveries, a route open to residents of every state.

Most problems should start lower. Call the office that serves your address, using the numbers in our listings, or use the USPS website and customer help line. If that fails, ask for the postmaster or station manager. Tracking numbers, photos of damaged items, and dates of missed delivery make any complaint stronger.

Neighborhood Post Offices Across the Four Quadrants

Many Washington post offices carry a neighborhood name, which makes them easy to match to where you live. These examples from our database show how coverage is spread across the city.

Several of these sit on long avenues such as Connecticut, Georgia and Pennsylvania, which carry Metrobus service. Fort Davis and Randle are in the part of Southeast that lies across the Anacostia River from Capitol Hill, so residents there should check the closest office rather than assume a Capitol Hill location is convenient.

The District has no rural areas, so the contrast is between downtown and residential streets. Offices near the federal core, such as the Benjamin Franklin Post Office at 1200 Pennsylvania Avenue NW (202-523-2386) and the Martin Luther King Jr Post Office at 1400 L Street NW (202-842-1350), serve office workers and tend to be busiest around lunch. The National Capitol Post Office at 2 Massachusetts Avenue NE (202-523-2368) sits in the Capitol Hill area and draws a mix of commuters and nearby households. Neighborhood offices mostly serve families, small businesses and apartment buildings.

Federal and Military Post Offices Inside the District

Washington has a group of post offices located inside government buildings and installations. They exist mainly for the people who work there, and they follow different access rules from a street-front branch.

Examples in our database include the White House Post Office (1700 Pennsylvania Avenue NW, 202-456-2541), the US Capitol Post Office (First Street SE, 202-226-5423), and the Ford Post Office (441 2nd Street SW, 202-226-5414). Others are the Dept Of Agriculture Post Office (1400 Independence Avenue SW, 202-720-9592) and the Frances Perkins Post Office (200 Constitution Avenue NW). Military offices include the Washington Navy Yard Post Office (1222 9th Street SE, 202-433-2216), the Naval Research Laboratory Post Office (4555 Overlook Avenue SW, 202-636-1200), and the Bolling Afb Post Office (10 Brookley Avenue SW, 202-767-4419).

Before you go, call ahead. Some of these offices may be open only to employees or people with official business, and visitors may need to pass security screening or show identification at a gate. Rules can change with security conditions, so a two-minute call prevents a wasted trip.

Mail addressed to federal agencies is often screened off-site before delivery, which can add days. If you are sending something time-sensitive to a government office, allow extra time and consider a delivery method with tracking.

What to Bring and When to Go

Bring a government-issued photo ID for any pickup of certified, registered, or held mail. If someone else is collecting for you, ask the office what authorization it requires before the visit. For a passport application, you will need proof of citizenship, a photo ID, photocopies of both, and a completed application. The State Department fee and the acceptance fee are paid separately, so confirm current amounts on official sites before you go.

Weekday lunch hours are the busiest, especially downtown. Early morning or mid-afternoon is usually quieter, and many routine tasks, such as printing postage or requesting a package pickup, can be done online. Hours vary by office, so confirm with the branch before you travel.

Write the full address with its quadrant, such as NW or SE. Leaving it off can send mail to a different part of the city, because the same street name often repeats in all four quadrants.

Post offices in District of Columbia are part of the national USPS network, operating under regional district management to deliver uniform service standards while accommodating the specific needs of urban, suburban, and rural communities across the state. Larger cities in District of Columbia may have multiple post offices and main processing facilities.

Post Office locations are available in 1 cities across District of Columbia. They are spread across 1 counties.

Cities with the highest concentration of post office locations include Washington, reflecting densely populated areas with multiple branch offices serving different neighborhoods and zip codes.

Residents of District of Columbia can use the USPS website to find the closest post office, check current lobby and window hours, locate self-service kiosks available after hours, and track incoming and outgoing mail and packages from their phones or computers.

Post Office by Counties

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Post Office by Cities

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Residents of District of Columbia can save time by using USPS online tools to schedule package pickups from home, print prepaid shipping labels, and set up mail forwarding or hold requests without visiting a post office. When visiting a post office in District of Columbia for passport acceptance, call ahead to confirm that the specific location offers the service and whether an appointment is required.

Browse Post Office by county across District of Columbia to find the nearest location.

Mailing in the District of Columbia: Addresses, ZIP Codes and Local Habits

Most of the District's street addresses follow a grid. Numbered streets run north and south, lettered streets run east and west, and named avenues cut diagonally across the grid. The quadrant suffix tells you which of the four sections you are in. Because 9th Street Northwest and 9th Street Southeast are miles apart, a missing suffix is one of the most common causes of misdelivered mail in Washington.

District ZIP codes begin with 200, and many federal agencies have their own codes that start with 202 through 205. If you work in a government building, use the exact mail code your agency gives you rather than the street address alone. For personal mail, a ZIP+4 code helps sorting machines send items to the right door.

Apartment living shapes how people use post offices here. Many buildings have shared mailrooms or package rooms, so residents may visit a branch only for certified items, passport services, or a PO Box. Others rent a box because their building has no secure parcel storage. A PO Box can also give you a stable address if you move often, which is common in a city with many students, interns, and federal staff on short assignments.

Moving within the city is simple to arrange. File a change of address with USPS online or at any branch, and keep your confirmation. If you will be away, a hold mail request keeps items at your local office until you return. Use the neighborhood name in our listings to find the branch that serves your block, then call it before your first visit.

Frequently Asked Questions About Post Offices in the District of Columbia

No. Every post office in Washington is part of the United States Postal Service, an independent federal agency. The D.C. government does not staff branches, set postage prices, or write mailing rules. Those decisions come from USPS leadership, the Board of Governors, and federal law, with rate oversight from the Postal Regulatory Commission. If you have a complaint, start with the branch or the USPS customer help line. For stubborn cases, contact the office of the District's delegate in the House of Representatives, which can ask USPS to review your case.

Start with your quadrant, then look for a branch named after your neighborhood. Residents of Petworth can look at the Petworth Post Office on 9th Street NW. Brookland residents have the Brookland Post Office on 12th Street NE, and Palisades residents have the branch on MacArthur Boulevard NW. Our District of Columbia County page lists all 55 entries with addresses and phone numbers. Call before you go to confirm hours and which services that branch offers.

Some branches act as passport acceptance facilities, but not every office offers the service. Ask the branch near you by phone, and check whether you need an appointment. Bring a completed application, proof of citizenship, a valid photo ID, and photocopies of your documents. The application fee goes to the State Department, and a separate acceptance fee is paid at the post office. Because amounts change, confirm them on official sites before your visit. Downtown branches can fill up quickly, so a neighborhood office may give you a shorter wait.

Do not assume so. The White House Post Office on Pennsylvania Avenue NW and the US Capitol Post Office on First Street SE sit inside secured government areas. The same is true of the Navy Yard, the Naval Research Laboratory, and Bolling Air Force Base offices. Access usually depends on having official business, an employee badge, or clearance at a checkpoint. If you only need a stamp or a package drop, a street-front branch such as the Southeast Post Office on Pennsylvania Avenue SE is a more practical choice.

Mail sent to government agencies is often screened before it reaches the recipient, and that screening can add days. Agencies with their own mail facilities, such as the Department of Agriculture on Independence Avenue SW or the Department of Labor in the Frances Perkins Building, may also route mail internally after USPS drops it off. For time-sensitive documents, use a tracked service and include the full mail code. Ask the recipient's mailroom what format it prefers. For personal mail to a home address, normal delivery times apply.

First check that your address includes the correct quadrant, since NW and NE versions of the same street are easy to confuse. Then call the branch that serves your block and ask for the station manager. Keep tracking numbers, dates, and photos. If you suspect theft, report it to the U.S. Postal Inspection Service, which investigates mail crimes nationwide, and file a police report with the Metropolitan Police Department if valuables or identity documents were taken. Consider a PO Box or a package locker if your building has no secure delivery.