ZIP Codes of Saint Lawrence County, NY

Population & People
Population & People
Total Population
105,509
Household Income
Household Income
Median Income
$68,781
Housing
Housing
Total Housing Units
50,482
Business & Economy
Business & Economy
Total Businesses
1,784
Employment
Employment
Employment Rate
50.60%
Education
Education
Bachelor's Degree+
25.48%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 47 ZIPs in this county.
Data Last Updated: July 1, 2026
ZIP Codes:47 ZIP Codes (35 Standard, 11 PO Box, 1 Unique) [See All]
Area Codes:315 / 518 / 680 / 838
Timezone:Eastern (GMT -05:00)
Local Time:11:54:35 PM
Population:105,509 [See All]
FIPS:36089
CBSA:Massena-Ogdensburg, NY
Land Area:2,596 sq mi
Water Area:130 sq mi
Coordinates:44.5565, -75.0823
Quick Link:
https://www.zip-codes.com/county/ny-saint-lawrence.asp
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New York's largest county by area
Spans 2,596 sq mi — the largest of 62 counties.
Extreme geographic sprawl
The largest ZIP spans 204× the smallest by area — 205.3 sq mi down to 1.01.
Striking education divide
Bachelor's share spans 11.5% to 41.9% — a 30-point gap.

Standout ZIPs in this County


Most Populous
Massena · 15,556 people
14.7% of county total
Highest Income
Rensselaer Falls · $80,625 median
1.2× county average
Largest Land Area
Gouverneur · 205.3 sq mi
Spans the most ground
Fastest Growth
Brasher Falls · 22.9% (10-yr)
2,385 → 2,931 residents
Most Educated
Potsdam · 41.9% bachelor's+
3,138 of 7,487 adults 25+

Things worth knowing about Saint Lawrence County


105,509 residents live across 47 ZIPs covering 2,596 sq mi, served by 46 distinct USPS-recognized cities.

Population moved from 110,112 to 103,218 from 2014 to 2024 — a -6.3% change. 15 ZIPs gained residents, 26 lost.

The county's wealthiest ZIP 13680 (Rensselaer Falls, $80,625 median) and poorest ZIP 13681 (Richville, $46,250) are 10.3 miles apart — a 1.7× income gap across local geography.

Median home values vary 2.1× across this county — from $89,000 in 12967 (North Lawrence) to $186,000 in 13694 (Waddington).

Density varies 2887× across the county — from 7 people/sq mi in 13684 (Russell) to 20,466 in 13699 (Potsdam).

Educational attainment ranges from 11.5% bachelor's+ in 13635 (Edwards) to 41.9% in 13676 (Potsdam) — the breadth of educational profiles across the area.

Within New York, this is the #27 most populous of 62 counties and ranks #51 for median household income .

Hosts 1 single-entity Unique ZIP: 13699Clarkson University .

Weighted by population, the typical household earns about $64,248 across the county — reflecting what a typical resident sees, not a simple ZIP average.

25.5% of adults age 25+ hold a bachelor's degree or higher (17,805 of 69,884 reporting).

35 Standard delivery, 11 PO Box only, 1 single-entity Unique ZIPs serve this county.

Stories about Saint Lawrence 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
2,596
square miles
Avg density
40.6
people per sq mi
Population
105,509
across 47 ZIPs
Gouverneur
205.3 sq mi
9,043 residents
Childwold
171.0 sq mi
44 residents
Russell
162.1 sq mi
1,149 residents

All ZIP Codes in Saint Lawrence County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
13662MassenaStandard15,556$59,106109.8-6.8%
13669OgdensburgStandard15,542$70,304121.4-5.4%
13676PotsdamStandard12,874$56,170155.6-23.0%
13617CantonStandard12,431$71,663129.010.6%
13642GouverneurStandard9,043$49,728205.3-8.2%
13668NorwoodStandard3,563$63,39337.32.3%
13667NorfolkStandard3,476$59,84953.115.2%
13613Brasher FallsStandard2,931$58,84681.922.9%
13646HammondStandard2,546$72,212129.6-5.0%
13699PotsdamUnique2,1940.1
13658LisbonStandard2,189$69,05584.810.6%
13654HeuveltonStandard2,073$74,12567.5-30.9%
13652HermonStandard2,067$67,94676.110.9%
13697WinthropStandard1,898$75,95366.6-5.5%
13625ColtonStandard1,792$80,41764.3-6.7%
13660MadridStandard1,774$68,48259.0-12.1%
13694WaddingtonStandard1,442$75,17923.2-8.8%
13635EdwardsStandard1,279$71,31648.053.9%
12967North LawrenceStandard1,263$75,78135.3-7.2%
13680Rensselaer FallsStandard1,186$80,62537.9-8.8%
13630De Kalb JunctionStandard1,184$63,33346.2-10.2%
13684RussellStandard1,149$57,465162.13.0%
13690Star LakeStandard748$62,00051.0-20.0%
13681RichvilleStandard738$46,25034.8-10.3%
13621Chase MillsStandard589$77,70329.05.0%
13687South ColtonStandard483$44,83367.6-11.0%
13672ParishvilleStandard449$76,21687.5-45.6%
13633De PeysterStandard389$65,62520.010.5%
13664MorristownStandard384$78,7501.0-12.5%
13670OswegatchieStandard378$36,250108.3-22.9%
12965NicholvilleStandard363$66,4778.4-20.0%
12927Cranberry LakePO Box318$68,125106.739.5%
13666Newton FallsPO Box234$38,43836.4-35.2%
13614Brier HillStandard214$39,0009.0-48.1%
13696West StockholmStandard1812.7187.3%
13695WanakenaPO Box157$123,03654.5101.3%
12973PiercefieldPO Box154$104,0914.5-29.7%
13623Chippewa BayPO Box680.041.7%
13649HelenaPO Box56$156,2501.7
12922ChildwoldStandard44$88,333171.022.2%
13683RooseveltownPO Box410.0
13647Hannawa FallsPO Box261.5-61.8%
13639FineStandard23$21,3466.3-88.4%
13678RaymondvillePO Box200.0-87.7%
13645HailesboroPO Box00.0
13677PyritesPO Box0.0
12949LawrencevilleStandard0.0

Adjacent & Nearby Counties