Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — STATE/ME/COUNTY/PENOBSCOT

Penobscot County, ME ZIP codes

There are 43 ZIP codes in Penobscot County, ME, in 41 towns, from 04401 to 04969. The largest are 04401 (Bangor), 04412 (Brewer) and 04444 (Hampden). 1 more crosses into it from a neighbouring county: 04462.

The county seat is Bangor.

ZIP codes
43
Partly in it
1 more
Towns
41
County seat
Bangor
County FIPS
23019
State
Maine
Population
154,710
Median household income
$66,356
Land area
3,397 sq mi
Area code
207
Metro area
Bangor

Penobscot County ZIP codes by town

Bangor (county seat)
04401, 04402

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

ZIP codes partly in Penobscot County

This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Penobscot County.

Map of Penobscot County ZIP codes

04401044020441004411044120441704418044190442204427044280443004434044350444404448044490445004453044550445604457044600446104468044690447304474044750448704488044890449304495047650477704928049300493204933049390495304969

The ZIP codes of Penobscot County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Penobscot County in numbers

About 154,710 people live in Penobscot County, in 65,221 households, the 3rd most populous of Maine's 16 counties. The median household income is $66,356 a year, 11% below the Maine median of $74,733 (US: $80,734). The median owner-occupied home is valued at $214,100 (28% below the Maine median), and median gross rent is $1,041 a month. The median age is 42.5; 30.1% of adults 25 and over hold a bachelor's degree or higher (36.2% across Maine); the average commute takes 23 minutes.

Population154,710Penobscot154,710
Households65,221Penobscot65,221
Median age42.5Penobscot42.5Maine44.8US 38.9
Median household income$66,356Penobscot$66,356Maine$74,733US $80,734
Median home value$214,100Penobscot$214,100Maine$296,600US $332,700
Median gross rent$1,041Penobscot$1,041Maine$1,139US $1,413
Bachelor's degree or higher30.1%Penobscot30.1%Maine36.2%US 35.7%
Mean commute22.7 minPenobscot22.7 minMaine24.6 minUS 26.4 min
Population density46 / sq miPenobscot46 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Penobscot County

Largest towns in Penobscot County
TownZIP codesPopulation
Bangor 2 31,938
Orono 2 11,151
Brewer 1 9,652
Old Town 1 7,470
Hampden 1 5,161
Orrington 1 3,853
Eddington 1 3,334
Levant 1 3,069
Corinth 1 2,990
Lincoln 1 2,954
Carmel 1 2,941
Milford 1 2,269
Dexter 1 1,852
West Enfield 1 1,840
Newport 1 1,730

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Penobscot County.

Not sure you are in Penobscot County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Penobscot County, with figures

ZIP codes in Penobscot County
ZIP City Type Population Median income Median home
04401 Bangor , ME Standard 44,854 $66,932 $239,900
04402 Bangor , ME No street area — — —
04410 Bradford , ME Standard 1,254 $82,955 $176,200
04411 Bradley , ME Standard 1,645 $76,667 $201,800
04412 Brewer , ME Standard 9,652 $66,613 $245,300
04417 Burlington , ME Standard 355 $46,094 $96,300
04418 Greenbush , ME Standard 1,649 $60,500 $135,100
04419 Carmel , ME Standard 2,941 $82,188 $256,800
04422 Charleston , ME Standard 1,117 $75,250 $226,500
04427 Corinth , ME Standard 2,990 $64,229 $135,800
04428 Eddington , ME Standard 3,334 $72,857 $244,500
04430 East Millinocket , ME Standard 1,495 $42,011 $86,200
04434 Etna , ME Standard 1,252 $72,379 $183,000
04435 Exeter , ME Standard 1,093 $84,408 $166,700
04444 Hampden , ME Standard 9,371 $106,554 $293,000
04448 Howland , ME Standard 1,540 $54,750 $152,000
04449 Hudson , ME Standard 1,251 $67,692 $154,900
04450 Kenduskeag , ME Standard 1,333 $79,792 $177,900
04453 Lagrange , ME Standard 785 $59,250 $134,800
04455 Lee , ME Standard 925 $49,886 $174,500
04456 Levant , ME Standard 3,069 $86,071 $268,500
04457 Lincoln , ME Standard 5,823 $56,645 $146,300
04460 Medway , ME Standard 1,111 $49,583 $101,200
04461 Milford , ME Standard 3,095 $85,111 $176,400
04468 Old Town , ME Standard 9,291 $56,358 $203,700
04469 Orono , ME Standard 3,531 — —
04473 Orono , ME Standard 8,371 $61,528 $272,600
04474 Orrington , ME Standard 3,853 $94,556 $309,000
04475 Passadumkeag , ME Standard 384 $55,417 $98,800
04487 Springfield , ME Standard 838 $48,000 $109,200
04488 Stetson , ME Standard 1,151 $76,023 $205,700
04489 Stillwater , ME Standard 214 — $262,500
04493 West Enfield , ME Standard 1,840 $61,563 $183,700
04495 Winn , ME Standard 287 $36,333 $95,600
04765 Patten , ME Standard 1,434 $50,286 $121,400
04777 Stacyville , ME Standard 478 $53,472 $106,300
04928 Corinna , ME Standard 2,192 $56,547 $163,200
04930 Dexter , ME Standard 4,258 $54,137 $168,600
04932 Dixmont , ME Standard 1,207 $75,952 $190,700
04933 East Newport , ME No street area — — —
04939 Garland , ME Standard 823 $51,094 $205,400
04953 Newport , ME Standard 3,143 $60,365 $234,800
04969 Plymouth , ME Standard 1,319 $61,964 $207,100

Cite this page

zipcodes.pro. “Penobscot County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/me/county/penobscot

Underlying data is public domain or openly licensed — sources, vintages and licences.