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/NY/COUNTY/PUTNAM

Putnam County, NY ZIP codes

There are 9 ZIP codes in Putnam County, NY, in 9 towns, from 10509 to 12563. The largest are 10512 (Carmel), 10541 (Mahopac) and 10509 (Brewster).

The county seat is Carmel.

ZIP codes
9
Towns
9
County seat
Carmel
County FIPS
36079
Population
98,107
Median household income
$126,257
Land area
230 sq mi
Area codes
329, 845, 914

Putnam County ZIP codes by town

Carmel (county seat)
10512

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.

Map of Putnam County ZIP codes

The ZIP codes of Putnam 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.

Putnam County in numbers

About 98,107 people live in Putnam County, in 35,545 households, the 29th most populous of New York's 62 counties. The median household income is $126,257 a year, 47% above the New York median of $85,974 (US: $80,734). The median owner-occupied home is valued at $471,300 (11% above the New York median), and median gross rent is $1,775 a month. The median age is 44.0; 45.5% of adults 25 and over hold a bachelor's degree or higher (40.2% across New York); the average commute takes 39 minutes.

Population98,107Putnam98,107
Households35,545Putnam35,545
Median age44.0Putnam44.0New York39.8US 38.9
Median household income$126,257Putnam$126,257New York$85,974US $80,734
Median home value$471,300Putnam$471,300New York$423,800US $332,700
Median gross rent$1,775Putnam$1,775New York$1,621US $1,413
Bachelor's degree or higher45.5%Putnam45.5%New York40.2%US 35.7%
Mean commute39.3 minPutnam39.3 minNew York32.6 minUS 26.4 min
Population density426 / sq miPutnam426 / 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 Putnam County

Largest towns in Putnam County
TownZIP codesPopulation
Mahopac 1 9,039
Putnam Valley 1 9,019
Carmel 1 7,306
Patterson 1 7,304
Garrison 1 4,578
Brewster 1 2,512
Lake Peekskill 1 2,439
Cold Spring 1 1,863

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 Putnam County.

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

Every ZIP code in Putnam County, with figures

ZIP codes in Putnam County
ZIP City Type Population Median income Median home
10509 Brewster , NY Standard 20,046 $116,831 $458,300
10512 Carmel , NY Standard 24,234 $117,701 $410,500
10516 Cold Spring , NY Standard 5,362 $140,225 $639,200
10524 Garrison , NY Standard 4,578 $146,250 $560,600
10537 Lake Peekskill , NY Standard 2,439 $132,117 $410,000
10541 Mahopac , NY Standard 26,361 $138,617 $508,500
10542 Mahopac Falls , NY Standard 0 — —
10579 Putnam Valley , NY Standard 9,019 $132,500 $548,400
12563 Patterson , NY Standard 7,304 $98,415 $412,300

Cite this page

zipcodes.pro. “Putnam County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/ny/county/putnam

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