ZIP Codes of Jay County, IN

Population & People
Population & People
Total Population
20,708
Household Income
Household Income
Median Income
$48,664
Housing
Housing
Total Housing Units
9,165
Business & Economy
Business & Economy
Total Businesses
417
Employment
Employment
Employment Rate
56.39%
Education
Education
Bachelor's Degree+
13.51%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 6 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:6 ZIP Codes (6 Standard, 0 PO Box, 0 Unique) [See All]
Area Codes:260 / 765
Timezone:Eastern (GMT -05:00)
Local Time:2:12:07 PM
Population:20,708 [See All]
FIPS:18075
Land Area:400 sq mi
Water Area:0 sq mi
Coordinates:40.4341, -85.0505
Quick Link:
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Extreme geographic sprawl
The largest ZIP spans 335× the smallest by area — 219.0 sq mi down to 0.65.

Standout ZIPs in this County


Most Populous
Portland · 12,424 people
60.0% of county total
Highest Income
Portland · $64,000 median
1.3× county average
Largest Land Area
Portland · 219.0 sq mi
Spans the most ground
Fastest Growth
Redkey · 1.3% (10-yr)
2,172 → 2,200 residents
Most Educated
Redkey · 15.7% bachelor's+
212 of 1,353 adults 25+

Things worth knowing about Jay County


20,708 residents live across 6 ZIPs covering 400 sq mi, served by 6 distinct USPS-recognized cities.

Population moved from 21,878 to 20,708 from 2014 to 2024 — a -5.3% change. 2 ZIPs gained residents, 4 lost.

The county's wealthiest ZIP 47371 (Portland, $64,000 median) and poorest ZIP 47369 (Pennville, $32,917) are 11.0 miles apart — a 1.9× income gap across local geography.

Median home values vary 1.9× across this county — from $83,800 in 47381 (Salamonia) to $157,800 in 47326 (Bryant).

Density varies 12× across the county — from 28 people/sq mi in 47326 (Bryant) to 334 in 47381 (Salamonia).

Educational attainment ranges from 6.6% bachelor's+ in 47381 (Salamonia) to 15.7% in 47373 (Redkey) — the breadth of educational profiles across the area.

Within Indiana, this is the #70 most populous of 92 counties and ranks #92 for median household income .

Weighted by population, the typical household earns about $57,455 across the county — reflecting what a typical resident sees, not a simple ZIP average.

13.5% of adults age 25+ hold a bachelor's degree or higher (1,858 of 13,750 reporting).

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

Stories about Jay County


Population decline

Jay County lost 5.3% of residents between 2014 and 2024. ZIPs that shed the largest share:

Pennville
-23.2%
1,578 → 1,212 residents
Dunkirk
-20.6%
3,592 → 2,851 residents

All ZIP Codes in Jay County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
47371PortlandStandard12,424$64,000219.0-0.8%
47336DunkirkStandard2,851$50,63352.4-20.6%
47373RedkeyStandard2,200$51,53230.11.3%
47326BryantStandard1,803$48,43864.8-3.2%
47369PennvilleStandard1,212$32,91732.7-23.2%
47381SalamoniaStandard218$44,4640.742.5%

Adjacent & Nearby Counties