ZIP Codes of Mifflin County, PA

Population & People
Population & People
Total Population
42,193
Household Income
Household Income
Median Income
$70,458
Housing
Housing
Total Housing Units
19,789
Business & Economy
Business & Economy
Total Businesses
991
Employment
Employment
Employment Rate
57.82%
Education
Education
Bachelor's Degree+
15.51%
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 (9 Standard, 2 PO Box, 0 Unique) [See All]
Area Codes:223 / 582 / 717 / 814
Timezone:Eastern (GMT -05:00)
Local Time:2:13:32 PM
Population:42,193 [See All]
FIPS:42087
CBSA:Lewistown, PA
Land Area:367 sq mi
Water Area:3 sq mi
Coordinates:40.5731, -77.6705
Quick Link:
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Wide geographic spread
ZIPs range from 99.1 sq mi down to 1.22 — a 81× sprawl ratio.

Standout ZIPs in this County


Most Populous
Lewistown · 20,234 people
48.0% of county total
Highest Income
Reedsville · $80,197 median
1.1× county average
Largest Land Area
Lewistown · 99.1 sq mi
Spans the most ground
Fastest Growth
Belleville · 9.5% (10-yr)
5,068 → 5,551 residents
Most Educated
Reedsville · 24.3% bachelor's+
746 of 3,065 adults 25+

Things worth knowing about Mifflin County


42,193 residents live across 11 ZIPs covering 367 sq mi, served by 11 distinct USPS-recognized cities.

Population moved from 43,015 to 41,907 from 2014 to 2024 — a -2.6% change. 3 ZIPs gained residents, 7 lost.

The county's wealthiest ZIP 17084 (Reedsville, $80,197 median) and poorest ZIP 17044 (Lewistown, $59,935) are 7.1 miles apart — a 1.3× income gap across local geography.

Median home values vary 3.8× across this county — from $66,400 in 17099 (Yeagertown) to $253,800 in 17054 (Mattawana).

Density varies 29× across the county — from 35 people/sq mi in 17063 (Milroy) to 999 in 17009 (Burnham).

Educational attainment ranges from 9.5% bachelor's+ in 17051 (Mc Veytown) to 24.3% in 17084 (Reedsville) — the breadth of educational profiles across the area.

Within Pennsylvania, this is the #49 most populous of 67 counties and ranks #32 for median household income .

Weighted by population, the typical household earns about $65,478 across the county — reflecting what a typical resident sees, not a simple ZIP average.

15.5% of adults age 25+ hold a bachelor's degree or higher (4,606 of 29,705 reporting).

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

All ZIP Codes in Mifflin County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
17044LewistownStandard20,234$59,93599.1-4.0%
17004BellevilleStandard5,551$65,06851.69.5%
17084ReedsvilleStandard4,683$80,19726.57.8%
17051Mc VeytownStandard4,352$64,07987.4-6.8%
17063MilroyStandard3,177$75,44491.4-3.5%
17009BurnhamStandard1,765$73,0881.8-11.1%
17099YeagertownStandard1,187$62,2501.2-4.9%
17002AllensvilleStandard451$69,7505.9-37.9%
17029GranvilleStandard382$76,0801.8-19.4%
17054MattawanaPO Box286$78,5230.0
17075Newton HamiltonPO Box125$70,6250.09.6%

Adjacent & Nearby Counties