ZIP Codes of Adams County, ID

Population & People
Population & People
Total Population
4,718
Household Income
Household Income
Median Income
$65,838
Housing
Housing
Total Housing Units
2,682
Business & Economy
Business & Economy
Total Businesses
120
Employment
Employment
Employment Rate
44.21%
Education
Education
Bachelor's Degree+
22.11%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 4 ZIPs in this county.
Data Last Updated: July 1, 2026
ZIP Codes:4 ZIP Codes (4 Standard, 0 PO Box, 0 Unique) [See All]
Area Codes:208 / 986
Timezone:Mountain (GMT -07:00)
Local Time:11:53:13 PM
Population:4,718 [See All]
FIPS:16003
Land Area:1,397 sq mi
Water Area:4 sq mi
Coordinates:44.7929, -116.4253
Quick Link:
https://www.zip-codes.com/county/id-adams.asp
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Wide geographic spread
ZIPs range from 778.2 sq mi down to 10.82 — a 72× sprawl ratio.
Among Idaho's 5 oldest counties
Median age 53.9.

Standout ZIPs in this County


Most Populous
Council · 2,085 people
44.2% of county total
Highest Income
New Meadows · $91,750 median
1.4× county average
Largest Land Area
Council · 778.2 sq mi
Spans the most ground
Fastest Growth
New Meadows · 19.4% (10-yr)
1,476 → 1,763 residents
Most Educated
New Meadows · 28.5% bachelor's+
367 of 1,288 adults 25+

Things worth knowing about Adams County


4,718 residents live across 4 ZIPs covering 1,397 sq mi, served by 4 distinct USPS-recognized cities.

Population moved from 3,973 to 4,718 from 2014 to 2024 — a +18.8% change. 3 ZIPs gained residents, 1 lost.

The county's wealthiest ZIP 83654 (New Meadows, $91,750 median) and poorest ZIP 83632 (Indian Valley, $51,583) are 37.0 miles apart — a 1.8× income gap across local geography.

Median home values vary 1.9× across this county — from $275,000 in 83632 (Indian Valley) to $534,600 in 83654 (New Meadows).

Density varies across the county — from 3 people/sq mi in 83612 (Council) to 15 in 83643 (Mesa).

Educational attainment ranges from 8.4% bachelor's+ in 83643 (Mesa) to 28.5% in 83654 (New Meadows) — the breadth of educational profiles across the area.

Within Idaho, this is the #41 most populous of 46 counties and ranks #31 for median household income with the #15 fastest decade growth .

Weighted by population, the typical household earns about $68,498 across the county — reflecting what a typical resident sees, not a simple ZIP average.

22.1% of adults age 25+ hold a bachelor's degree or higher (818 of 3,700 reporting).

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

Stories about Adams 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
1,397
square miles
Avg density
3.4
people per sq mi
Population
4,718
across 4 ZIPs
Council
778.2 sq mi
2,085 residents
New Meadows
443.4 sq mi
1,763 residents
Indian Valley
165.0 sq mi
704 residents

All ZIP Codes in Adams County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
83612CouncilStandard2,085$54,810778.2-1.7%
83654New MeadowsStandard1,763$91,750443.419.4%
83632Indian ValleyStandard704$51,583165.0147.0%
83643MesaStandard166$65,20810.882.4%

Adjacent & Nearby Counties