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ZIP Code 18631
Mifflinville, PA, Columbia County
Population
1,100
Land area
1.4sq mi
People per sq mi
773
City
Mifflinville
ZIP 18631 and nearby ZIP codes
ZIP 18631 at a glance
- ZIP 18631 (Mifflinville) is about 2.7 times as dense as Pennsylvania as a whole.
- Households here earn a median of $46,125 a year, 41% less than the Pennsylvania figure of $77,971.
- A typical owner-occupied home is valued at $214,100 (16% below Pennsylvania) and median rent is $959 a month.
Local data for ZIP 18631
Counts from official public data
Housing and community stats
ZIP 18631, American Community Survey 2020-2024
Median household income
$46,125
Poverty rate
14.2%
Median home value
$214,100
Median rent
$959/mo
Homeownership
78.3%
Bachelor's or higher
29.6%
Median age
47.0
Average commute
21.3 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
27
ZIP Business Patterns 2023
Employees
335
$13.4M annual payroll
PPP loans
$1.7M
21 loans
Campaign donations
$197
25% D, 0% R, 2026 cycle
Environment and hazard risk
ZIP 18631, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: winter weather
Storm events since 1996
385
Countywide, mostly thunderstorm wind
Flood insurance policies
490
1.9% of homes, county
July high / Jan low
80° / 16°F
48.4 inches of rain a year
Frequently asked questions
- What city is ZIP code 18631?
- ZIP code 18631 is in Mifflinville, PA (Columbia County).
- What county is ZIP code 18631 in?
- ZIP code 18631 is mostly in Columbia County, Pennsylvania.
- How many people live in ZIP code 18631?
- About 1,100 people live in the 18631 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.
Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.