A post office in Connecticut is a federal facility, not a state or town office. The United States Postal Service runs every retail counter in the state, from the Old State House Post Office at 80 State House Square in Hartford to small village offices in the northeast hills. Our database lists 304 of them across 166 cities and villages. This page explains who is in charge, how the network differs between the Gold Coast and the Quiet Corner, and what to do before you leave home.

Who Runs Post Offices in Connecticut

Many people assume a state agency oversees their local post office. In Connecticut, none does. The Postal Service is an independent federal agency, and its operations fall under Title 39 of the United States Code. Prices, mail classes and service standards are set nationally. Neither Hartford nor your town hall has a say in them.

Oversight comes from federal bodies. The Postal Regulatory Commission reviews rates and service performance. The USPS Office of Inspector General and the Postal Inspection Service deal with employee misconduct and mail crime. If a problem is not solved locally, the offices of Connecticut's U.S. senators and representatives employ caseworkers who can press the Postal Service on your behalf.

What the state and towns do handle is nearby but separate. Your town clerk issues absentee ballot applications and keeps land and vital records. The Connecticut Department of Motor Vehicles handles licenses and registrations. None of that happens at a postal counter, so do not bring a license renewal or a dog license form to the window expecting it to be processed.

One more Connecticut detail matters for how you use this directory. The state abolished county government in 1960, so its eight counties are geographic labels rather than service providers. Postal service is organized by ZIP code instead, and every Connecticut ZIP code begins with 06. We group listings by county because it is the easiest way to browse.

Eight Counties, Two Very Different Post Office Networks

The shape of the network follows population. Connecticut is a small state, but a dense southwestern corridor and a thinly settled northeast produce very different experiences at the counter.

Metro Connecticut: Hartford, Fairfield and New Haven Counties

Hartford County has the most listings, 62 in all. Besides the Old State House Post Office downtown, you will find the Berlin Post Office at 780 Worthington Ridge, the South Glastonbury Post Office at 885 Main Street, and the Marion Post Office at 2321 Meriden-Waterbury Turnpike in Southington. Canton Center, at 178 Cherry Brook Road, shows how a suburban town keeps a small office in its village center.

Fairfield County has 49 listings and the state's busiest commuter towns. The Atlantic Street Post Office at 421 Atlantic Street in Stamford, the Bayview Post Office at 115 Boston Avenue in Bridgeport, and the Downtown Post Office at 44 Amogerone Crossway in Greenwich all serve dense, high-volume areas. Fairfield's Commerce Post Office on Commerce Drive and Norwalk's Belden Post Office on Belden Avenue follow the same pattern: separate offices for separate districts.

New Haven County has 45 listings. The Fair Haven Post Office at 230 Grand Avenue serves a New Haven neighborhood, while Hamden's office is at 1744 Dixwell Avenue and Milford's is at 300 Pepes Farm Road. In Waterbury, the Lakewood Post Office sits at 797 Lakewood Road. On the shoreline, the Short Beach Post Office at 5 Court Street serves part of Branford.

Rural and Shoreline Connecticut: Litchfield, New London, Windham, Middlesex and Tolland Counties

Litchfield County has 40 listings spread over hill towns with few people per square mile. The Cornwall Bridge Post Office at 18 Kent Road South is a good example. In places like this, the post office is often the main public gathering spot, and hours can be shorter than in a city.

Windham County has 32 listings, and the mill-town history shows. Killingly has five, including the Danielson Post Office at 70 Water Street. Thompson has four, among them North Grosvenordale at 831 Riverside Drive, and Plainfield's Moosup office is at 21 South Main Street. North Windham, on Boston Post Road, serves the Willimantic area.

New London County has 36 listings, with Groton and Stonington each well represented. The Groton Naval Base Post Office serves the submarine base, Old Mystic has its own office on Main Street, and Montville's is on Route 163.

Middlesex County has 22 listings, including the Cobalt Post Office at 371 West High Street in East Hampton. Tolland County has the fewest at 18, spread over small towns around the main University of Connecticut campus in Storrs.

Why Your Connecticut Mailing Address May Not Match Your Town

Connecticut has 169 towns, and many contain several villages. Over the years, several villages kept their own post office and ZIP code. The result is that your mailing city and your town of residence can differ.

Our listings show this clearly. Moosup is a village in the town of Plainfield. Old Mystic is part of Stonington. North Grosvenordale belongs to Thompson, and Short Beach belongs to Branford. Botsford, on Botsford Hill Road, is in Newtown, and Marion is in Southington.

This matters in three situations. First, when you search for an office, try both the village name and the town name. Second, when you register to vote or pay property taxes, use the town on your tax bill, not the village in your mailing address. Third, when you fill out a form that asks for your municipality, check whether it wants the town or the postal city.

Before You Go: A Connecticut Post Office Checklist

A few habits save a wasted trip, especially at smaller offices.

Phone numbers in our listings are a good starting point. For example, the Danielson office is listed at 860-779-5066 and the Atlantic Street office in Stamford at 203-323-2453. Confirm details by phone before a long drive.

Post offices in Connecticut 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 Connecticut may have multiple post offices and main processing facilities.

Post Office locations are available in 166 cities across Connecticut. They are spread across 8 counties.

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

Residents of Connecticut 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.

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Residents of Connecticut 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 Connecticut 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 Connecticut to find the nearest location.

Seasonal, Shoreline and Snow: Timing Your Visit in Connecticut

Post office demand in Connecticut rises and falls with the calendar. The shoreline offices in places like Stonington, Old Mystic and Branford's Short Beach see more activity in summer, when part-time residents arrive and then leave. If you are one of them, set up mail holds or forwarding before you go rather than asking neighbors to collect it.

Winter has the opposite effect. A Nor'easter or an ice storm can slow delivery on narrow hill roads in Litchfield and Windham Counties long before it affects Stamford or New Haven. Rural carriers cover long routes, so a day of delay is common after a heavy storm. Check tracking before you assume anything is lost.

Time of day matters too. Mid-morning on Tuesday through Thursday tends to be quieter than lunch hour or late Friday afternoon. The days after a holiday weekend and the weeks before late December are the busiest, so mail early if you can.

Finally, remember that Connecticut's offices cover very different customers. The Groton Naval Base Post Office serves a military installation, the Old State House Post Office sits at the center of the state capital's downtown, and Cornwall Bridge serves a quiet Litchfield County village. Match your expectations to the office. A rural counter may not offer passport appointments, and a city counter may have a longer wait.

Frequently Asked Questions About Post Offices in Connecticut

No. Every post office in Connecticut belongs to the United States Postal Service, an independent federal agency governed by Title 39 of the U.S. Code. State government does not set hours, prices or staffing, and there is no Connecticut postal authority to complain to. The state's eight counties have had no county government since 1960, so they do not run mail services either. Your town clerk handles local records and absentee ballot applications, and the Department of Motor Vehicles handles licenses. For postal problems, start with the local postmaster, then USPS customer service, then your U.S. senators or representative.

ZIP codes follow post office delivery areas, not town lines. Many Connecticut towns contain several villages that kept their own post offices, such as Moosup in Plainfield, Old Mystic in Stonington, North Grosvenordale in Thompson and Short Beach in Branford. Mail addressed to the village name is delivered normally, but your mailing city can differ from the town where you vote and pay taxes. For property taxes, voter registration and school enrollment, use the town named on your tax bill. When you search our directory, try both the village and the town name.

At participating offices, yes, but not every location offers it. First-time adult applicants, children under 16 and people whose passports were lost or damaged generally must apply in person. Offices usually require an appointment, so call ahead. Bring the completed DS-11 form, but do not sign it until the acceptance agent tells you to. Also bring proof of citizenship, a photo ID and a photocopy of each. Expect two payments: a $35 execution fee to the Postal Service, and the State Department fee, usually by check or money order. Eligible renewals can usually be done by mail instead.

Our database lists this office at 1 Naval Submarine Base in Groton, with the phone number 860-445-7744. It sits inside Naval Submarine Base New London, a working military installation, so entry is controlled at the gate. Rules for visitors and non-military customers can change, and they differ from those of an ordinary town office. Call the listed number first to ask about access, ID requirements and counter hours. If you cannot enter the base, Groton has six listings in our database, so another office in the area may be easier to reach.

For short absences, the Postal Service offers a hold mail service, online or at your local office, for a minimum of three days and up to 30 days. For longer stays away, file a temporary change of address, which forwards your mail for a set period. An online change-of-address request carries a small identity verification charge on a card whose billing address matches. A paper form at the counter avoids that online charge. Whichever route you choose, submit the request several days before you leave, since processing is not instant.

Check tracking first, then ask neighbors, since misdelivery to a nearby address is common. If the item is still missing, contact the delivery post office listed in our directory, or call the Postal Service at 1-800-275-8777 to open a help request. For insured or registered items, file a claim at USPS.com with your receipt. If you suspect theft from a collection box or cluster mailbox, report it to the Postal Inspection Service and to your local police department. If checks were stolen, tell your bank immediately.