ZIP Codes of Adams County, ND

Population & People
Population & People
Total Population
354
Household Income
Household Income
Median Income
$68,839
Housing
Housing
Total Housing Units
233
Business & Economy
Business & Economy
Total Businesses
Employment
Employment
Employment Rate
56.82%
Education
Education
Bachelor's Degree+
9.59%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 1 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:2 ZIP Codes (2 Standard, 0 PO Box, 0 Unique) [See All]
Population:354 [See All]
FIPS:38001
Land Area:792 sq mi
Coordinates:46.1590, -102.9543
Quick Link:
https://www.zip-codes.com/county/nd-adams.asp
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Among North Dakota's 5 oldest counties
Median age 55.1.

Standout ZIPs in this County


Most Populous
Hettinger · 1,762 people
83.3% of county total
Highest Income
Reeder · $68,839 median
1.0× county average
Largest Land Area
Hettinger · 553.5 sq mi
Spans the most ground
Fastest Growth
Hettinger · -3.3% (10-yr)
1,823 → 1,762 residents
Most Educated
Hettinger · 25.9% bachelor's+
321 of 1,237 adults 25+

Things worth knowing about Adams County


2,116 residents live across 2 ZIPs covering 792 sq mi, served by 2 distinct USPS-recognized cities.

Population moved from 2,216 to 2,116 from 2014 to 2024 — a -4.5% change. 0 ZIPs gained residents, 2 lost.

The county's wealthiest ZIP 58649 (Reeder, $68,839 median) and poorest ZIP 58639 (Hettinger, $63,636) are 20.5 miles apart — a 1.1× income gap across local geography.

Median home values vary 1.6× across this county — from $72,500 in 58649 (Reeder) to $116,500 in 58639 (Hettinger).

Density varies across the county — from 1 people/sq mi in 58649 (Reeder) to 3 in 58639 (Hettinger).

Educational attainment ranges from 9.6% bachelor's+ in 58649 (Reeder) to 25.9% in 58639 (Hettinger) — the breadth of educational profiles across the area.

Within North Dakota, this is the #62 most populous of 64 counties and ranks #45 for median household income .

Weighted by population, the typical household earns about $64,506 across the county — reflecting what a typical resident sees, not a simple ZIP average.

22.8% of adults age 25+ hold a bachelor's degree or higher (349 of 1,529 reporting).

2 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
792
square miles
Avg density
2.7
people per sq mi
Population
2,116
across 2 ZIPs
Hettinger
553.5 sq mi
1,762 residents
Reeder
238.5 sq mi
354 residents

Single-ZIP anchor

One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.

Hettinger

Population decline

Adams County lost 9.9% of residents between 2014 and 2024.

All ZIP Codes in Adams County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
58639HettingerStandard1,762$63,636553.5-3.3%
58649ReederStandard354$68,839238.5-9.9%

Adjacent & Nearby Counties