ZIP Codes of Columbia County, PA

Population & People
Population & People
Total Population
68,498
Household Income
Household Income
Median Income
$66,471
Housing
Housing
Total Housing Units
31,588
Business & Economy
Business & Economy
Total Businesses
1,487
Employment
Employment
Employment Rate
55.43%
Education
Education
Bachelor's Degree+
26.85%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 11 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:11 ZIP Codes (8 Standard, 3 PO Box, 0 Unique) [See All]
Area Codes:272 / 570
Timezone:Eastern (GMT -05:00)
Local Time:2:13:30 PM
Population:68,498 [See All]
FIPS:42037
CBSA:Bloomsburg-Berwick, PA
Land Area:533 sq mi
Water Area:8 sq mi
Coordinates:41.0256, -76.3707
Quick Link:
https://www.zip-codes.com/county/pa-columbia.asp
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Pennsylvania's #38 most populous county
68,498 residents across 11 ZIPs — #38 of 67 Pennsylvania counties.

Standout ZIPs in this County


Most Populous
Bloomsburg · 29,790 people
43.5% of county total
Highest Income
Orangeville · $75,515 median
1.1× county average
Largest Land Area
Bloomsburg · 139.1 sq mi
Spans the most ground
Fastest Growth
Stillwater · 14.4% (10-yr)
1,301 → 1,488 residents
Most Educated
Bloomsburg · 32.9% bachelor's+
5,929 of 17,999 adults 25+

Things worth knowing about Columbia County


68,498 residents live across 11 ZIPs covering 533 sq mi, served by 11 distinct USPS-recognized cities.

Population moved from 70,630 to 68,387 from 2014 to 2024 — a -3.2% change. 3 ZIPs gained residents, 7 lost.

The county's wealthiest ZIP 17859 (Orangeville, $75,515 median) and poorest ZIP 18631 (Mifflinville, $46,125) are 6.9 miles apart — a 1.6× income gap across local geography.

Median home values vary 1.4× across this county — from $156,300 in 17888 (Wilburton) to $224,800 in 17814 (Benton).

Density varies 23× across the county — from 35 people/sq mi in 17814 (Benton) to 805 in 18631 (Mifflinville).

Educational attainment ranges from 17.7% bachelor's+ in 17814 (Benton) to 32.9% in 17815 (Bloomsburg) — the breadth of educational profiles across the area.

Within Pennsylvania, this is the #38 most populous of 67 counties and ranks #44 for median household income .

Weighted by population, the typical household earns about $65,329 across the county — reflecting what a typical resident sees, not a simple ZIP average.

26.8% of adults age 25+ hold a bachelor's degree or higher (12,499 of 46,557 reporting).

8 Standard delivery, 3 PO Box only, 0 single-entity Unique ZIPs serve this county.

All ZIP Codes in Columbia County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
17815BloomsburgStandard29,790$67,510139.1-4.0%
18603BerwickStandard18,827$60,35256.7-2.8%
17820CatawissaStandard5,499$67,68591.41.3%
17814BentonStandard4,669$65,089132.3-2.4%
17846MillvilleStandard3,621$66,59147.1-1.5%
17859OrangevilleStandard2,701$75,51538.8-11.0%
17878StillwaterStandard1,488$68,12522.314.4%
18631MifflinvillePO Box1,100$46,1251.4-20.1%
17888WilburtonStandard4463.857.6%
17920AristesPO Box2460.0-29.1%
17858NumidiaPO Box111$81,2500.0

Adjacent & Nearby Counties