ZIP Codes of Washington County, NY

Population & People
Population & People
Total Population
63,520
Household Income
Household Income
Median Income
$79,442
Housing
Housing
Total Housing Units
30,001
Business & Economy
Business & Economy
Total Businesses
1,068
Employment
Employment
Employment Rate
55.52%
Education
Education
Bachelor's Degree+
21.91%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 21 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:21 ZIP Codes (19 Standard, 2 PO Box, 0 Unique) [See All]
Area Codes:518 / 838
Timezone:Eastern (GMT -05:00)
Local Time:2:13:17 PM
Population:63,520 [See All]
FIPS:36115
CBSA:Glens Falls, NY
Land Area:804 sq mi
Water Area:15 sq mi
Coordinates:43.3370, -73.4180
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Extreme geographic sprawl
The largest ZIP spans 1967× the smallest by area — 123.3 sq mi down to 0.06.
Extreme education divide
Bachelor's share ranges 3.2% to 76.5% across ZIPs — a 73-point gap.

Standout ZIPs in this County


Most Populous
Hudson Falls · 13,541 people
21.3% of county total
Highest Income
Cossayuna · $118,783 median
1.5× county average
Largest Land Area
Fort Ann · 123.3 sq mi
Spans the most ground
Fastest Growth
Buskirk · 52.1% (10-yr)
1,024 → 1,557 residents
Most Educated
Greenwich · 34.4% bachelor's+
1,636 of 4,751 adults 25+

Things worth knowing about Washington County


63,520 residents live across 21 ZIPs covering 804 sq mi, served by 21 distinct USPS-recognized cities.

Population moved from 64,459 to 63,434 from 2014 to 2024 — a -1.6% change. 8 ZIPs gained residents, 11 lost.

The county's wealthiest ZIP 12823 (Cossayuna, $118,783 median) and poorest ZIP 12887 (Whitehall, $56,709) are 27.9 miles apart — a 2.1× income gap across local geography.

Median home values vary 2.4× across this county — from $123,400 in 12887 (Whitehall) to $294,000 in 12849 (Middle Granville).

Density varies 32× across the county — from 14 people/sq mi in 12861 (Putnam Station) to 459 in 12839 (Hudson Falls).

Educational attainment ranges from 3.2% bachelor's+ in 12821 (Comstock) to 76.5% in 12823 (Cossayuna) — the breadth of educational profiles across the area.

Within New York, this is the #39 most populous of 62 counties and ranks #32 for median household income .

Weighted by population, the typical household earns about $75,217 across the county — reflecting what a typical resident sees, not a simple ZIP average.

21.9% of adults age 25+ hold a bachelor's degree or higher (10,366 of 47,317 reporting).

19 Standard delivery, 2 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Washington County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
804
square miles
Avg density
79.0
people per sq mi
Population
63,520
across 21 ZIPs
Fort Ann
123.3 sq mi
3,716 residents
Whitehall
88.8 sq mi
4,691 residents
Greenwich
83.7 sq mi
6,039 residents

All ZIP Codes in Washington County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
12839Hudson FallsStandard13,541$71,42329.5-1.8%
12828Fort EdwardStandard9,230$76,01948.1-0.7%
12832GranvilleStandard6,153$68,92981.5-7.1%
12834GreenwichStandard6,039$81,20583.7-3.3%
12816CambridgeStandard4,824$75,96660.511.4%
12887WhitehallStandard4,691$56,70988.8-17.6%
12827Fort AnnStandard3,716$81,424123.30.3%
12809ArgyleStandard3,669$83,93854.86.0%
12865SalemStandard3,356$71,98373.0-13.4%
12821ComstockStandard2,12410.2-2.5%
12028BuskirkStandard1,557$96,89124.152.1%
12837HamptonStandard1,021$81,58314.4-1.1%
12873ShushanStandard886$103,23921.448.2%
12838HartfordStandard734$62,3485.422.1%
12823CossayunaStandard597$118,7834.470.1%
12861Putnam StationStandard501$92,03135.0-28.2%
12849Middle GranvilleStandard3712.8-34.2%
12819ClemonsStandard350$64,68821.710.8%
12854North GranvilleStandard860.1
12841Huletts LandingPO Box74$63,34821.6-16.9%
12848Middle FallsPO Box0.0

Adjacent & Nearby Counties