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zipcodes.pro — STATE/NY/COUNTY/LEWIS

Lewis County, NY ZIP codes

There are 18 ZIP codes in Lewis County, NY, in 18 towns, from 13305 to 13665. The largest are 13367 (Lowville), 13648 (Harrisville) and 13327 (Croghan).

The county seat is Lowville.

ZIP codes
18
Towns
18
County seat
Lowville
County FIPS
36049
Population
26,607
Median household income
$68,182
Land area
1,276 sq mi

Lewis County ZIP codes by town

Lowville (county seat)
13367

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 Lewis County ZIP codes

133051331213325133271334313345133671336813404134331347313489136201362613627136311364813665

The ZIP codes of Lewis 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.

Lewis County in numbers

About 26,607 people live in Lewis County, in 11,110 households, the 59th most populous of New York's 62 counties. The median household income is $68,182 a year, 21% below the New York median of $85,974 (US: $80,734). The median owner-occupied home is valued at $166,100 (61% below the New York median), and median gross rent is $837 a month. The median age is 41.9; 18.6% of adults 25 and over hold a bachelor's degree or higher (40.2% across New York); the average commute takes 24 minutes.

Population26,607Lewis26,607
Households11,110Lewis11,110
Median age41.9Lewis41.9New York39.8US 38.9
Median household income$68,182Lewis$68,182New York$85,974US $80,734
Median home value$166,100Lewis$166,100New York$423,800US $332,700
Median gross rent$837Lewis$837New York$1,621US $1,413
Bachelor's degree or higher18.6%Lewis18.6%New York40.2%US 35.7%
Mean commute24.2 minLewis24.2 minNew York32.6 minUS 26.4 min
Population density21 / sq miLewis21 / 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 Lewis County

Largest towns in Lewis County
TownZIP codesPopulation
Lowville 1 3,404
Harrisville 1 2,236
Glenfield 1 1,606
Port Leyden 1 659
Croghan 1 642
Copenhagen 1 635
West Leyden 1 576
Lyons Falls 1 569
Castorland 1 481
Beaver Falls 1 403
Constableville 1 332
Turin 1 297
Brantingham 1 228
Greig 1 217
Martinsburg 1 159

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 Lewis County.

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

Every ZIP code in Lewis County, with figures

ZIP codes in Lewis County
ZIP City Type Population Median income Median home
13305 Beaver Falls , NY Standard 403 — $106,400
13312 Brantingham , NY Standard 228 $72,266 $331,300
13325 Constableville , NY Standard 918 $58,750 $143,500
13327 Croghan , NY Standard 2,009 $66,875 $181,300
13343 Glenfield , NY Standard 1,606 $70,478 $163,600
13345 Greig , NY Standard 217 $48,750 $135,700
13367 Lowville , NY Standard 8,601 $67,873 $171,000
13368 Lyons Falls , NY Standard 1,129 $62,159 $128,700
13404 Martinsburg , NY Standard 159 — $92,600
13433 Port Leyden , NY Standard 1,686 $50,806 $130,900
13473 Turin , NY Standard 982 $103,598 $171,700
13489 West Leyden , NY Standard 576 $89,271 $189,300
13620 Castorland , NY Standard 2,298 $70,087 $181,800
13626 Copenhagen , NY Standard 2,202 $64,495 $179,300
13627 Deer River , NY No street area — — —
13631 Denmark , NY No street area — — —
13648 Harrisville , NY Standard 2,236 $60,735 $118,200
13665 Natural Bridge , NY Standard 465 $51,250 $141,800

Cite this page

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

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