ZIP Codes of Kosciusko County, IN

Population & People
Population & People
Total Population
78,187
Household Income
Household Income
Median Income
$75,418
Housing
Housing
Total Housing Units
37,999
Business & Economy
Business & Economy
Total Businesses
1,983
Employment
Employment
Employment Rate
62.97%
Education
Education
Bachelor's Degree+
25.68%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 15 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:15 ZIP Codes (13 Standard, 2 PO Box, 0 Unique) [See All]
Area Codes:260 / 574
Timezone:Eastern (GMT -05:00)
Local Time:2:12:07 PM
Population:78,187 [See All]
FIPS:18085
CBSA:Warsaw, IN
Land Area:542 sq mi
Water Area:23 sq mi
Coordinates:41.2412, -85.8693
Quick Link:
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Extreme geographic sprawl
The largest ZIP spans 951× the smallest by area — 74.4 sq mi down to 0.08.
Striking education divide
Bachelor's share spans 3.5% to 50.6% — a 47-point gap.

Standout ZIPs in this County


Most Populous
Warsaw · 21,794 people
27.9% of county total
Highest Income
Claypool · $99,420 median
1.3× county average
Largest Land Area
Warsaw · 74.4 sq mi
Spans the most ground
Fastest Growth
Mentone · 39.1% (10-yr)
1,911 → 2,659 residents
Most Educated
Winona Lake · 50.6% bachelor's+
1,538 of 3,041 adults 25+

Things worth knowing about Kosciusko County


78,187 residents live across 15 ZIPs covering 542 sq mi, served by 13 distinct USPS-recognized cities.

Population moved from 74,830 to 78,187 from 2014 to 2024 — a +4.5% change. 8 ZIPs gained residents, 6 lost.

The county's wealthiest ZIP 46510 (Claypool, $99,420 median) and poorest ZIP 46524 (Etna Green, $65,987) are 13.3 miles apart — a 1.5× income gap across local geography.

Median home values vary 1.7× across this county — from $159,000 in 46539 (Mentone) to $274,500 in 46590 (Winona Lake).

Density varies 34× across the county — from 43 people/sq mi in 46510 (Claypool) to 1,475 in 46590 (Winona Lake).

Educational attainment ranges from 3.5% bachelor's+ in 46524 (Etna Green) to 50.6% in 46590 (Winona Lake) — the breadth of educational profiles across the area.

Within Indiana, this is the #22 most populous of 92 counties and ranks #32 for median household income .

Weighted by population, the typical household earns about $74,530 across the county — reflecting what a typical resident sees, not a simple ZIP average.

25.7% of adults age 25+ hold a bachelor's degree or higher (13,586 of 52,911 reporting).

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

All ZIP Codes in Kosciusko County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
46580WarsawStandard21,794$71,68774.42.1%
46582WarsawStandard14,604$66,73860.919.3%
46567SyracuseStandard9,292$77,10365.42.2%
46542MilfordStandard5,096$78,60651.525.7%
46590Winona LakeStandard5,080$82,1883.43.0%
46562PiercetonStandard5,040$68,90261.7-1.7%
46538LeesburgStandard4,291$89,80332.76.7%
46510ClaypoolStandard2,984$99,42069.6-13.2%
46539MentoneStandard2,659$74,07933.639.1%
46982Silver LakeStandard2,604$79,68842.5-1.5%
46555North WebsterStandard2,517$70,39911.4-15.0%
46524Etna GreenStandard2,023$65,98734.9-18.1%
46508BurketStandard203$55,8330.127.7%
46502AtwoodPO Box00.0-100.0%
46581WarsawPO Box0.0

Adjacent & Nearby Counties