Mifflinville, PA · standard
ZIP Code 18631
Columbia County, Pennsylvania - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 1,286
- 289/sq mi High-density area
- $46,125
- Median income Below-median income area
- $214,100
- Median home value Near-median home value
- 29.6%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
Mifflinville pairs one of the lowest household incomes in the country with below-median home values, in a low-density, homeowner-dominated area.
- 10th pct
- household income, US ZIPs
- 47th pct
- home value, US ZIPs
- 289
- people per sq mi
- 78%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 18631 against every reporting US ZIP.
ZIP code 18631 is a sparsely populated ZIP (a standard USPS delivery area) in Mifflinville, Columbia County, Pennsylvania, home to just 1,286 residents across 4.4 square miles, a density of 289 people per square mile, in the New York time zone.
ZIP 18631 reports a modest median household income of $46,125 (41% below the average Pennsylvania ZIP), while per-capita income is $29,601. The poverty rate is 14.2%, with unemployment at 0.0%; those measures add context to the income figure. Median home value is $214,100 (6% below the average Pennsylvania ZIP) and median rent is $959; 78.3% of occupied homes are owner-occupied.
Educational attainment sits below the national norm: 29.6% of adults hold a bachelor's degree or higher, the median age is 47, and the average commute is -. The page also surfaces 8 ZIP codes within roughly 10 miles and 6 more in Columbia County, so 18631 can be compared with both its immediate and county-level context.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Top industries in ZIP 18631
Top 5 sectors by establishment count in Mifflinville, PA
Which industries have the most business establishments in ZIP 18631.
- Construction
Construction
5 establishments
- Accommodation and food services
Accommodation and food services
5 establishments
- Retail trade
Retail trade
4 establishments
- Health care and social assistance
Health care and social assistance
3 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 18631, Mifflinville, PA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
1,286
Population
4.4
Area (sq mi)
289
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 18631?
47.0
Median Age
49.4%
Male
50.6%
Female
3.2%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$46,125
Median Household Income
-41% vs state ZIP avg
$29,601
Per Capita Income
14.2%
Poverty Rate
0.0%
Unemployment Rate
How ZIP 18631 ranks among Pennsylvania ZIPs
Mifflinville, PA household income vs. every Pennsylvania ZIP code
Median household income among 1,642 reporting Pennsylvania ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$46,125 6th percentile higher than 6% of 1,642 Pennsylvania ZIPs
Each bar is a $20K-wide band; taller bars hold more Pennsylvania ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
533housing units
533
Total Housing Units
517
Occupied Units
16
Vacant Units
2.13
Avg Household Size
Occupancy Type
$214,100
Median Home Value
-6% vs state ZIP avg
$959
Median Rent
1967
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 27 business establishments in ZIP 18631, employing approximately 335 people with a combined annual payroll of $13,435,000.
27
Businesses
335
Employees
$13.4M
Annual Payroll
4
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 5 | 18.5% |
| Accommodation and food services | 5 | 18.5% |
| Retail trade | 4 | 14.8% |
| Health care and social assistance | 3 | 11.1% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 18631 vs 18635 →
ZIP 18631 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 17815
Bloomsburg (17815)
30,967 residents
- 18603
Berwick (18603)
19,320 residents
- 17820 5,556
Catawissa (17820)
5,556 residents
- 18635 3,881
Nescopeck (18635)
3,881 residents
- 17859 3,106
Orangeville (17859)
3,106 residents
- 17878 1,528
Stillwater (17878)
1,528 residents
- 18631 1,286
Mifflinville (18631)
1,286 residents
- 17985 1,226
Zion Grove (17985)
1,226 residents
- 18246 143
Rock Glen (18246)
143 residents
What this shows Among its immediate neighbors, ZIP 18631 ranks #7 by population - useful context the national average alone can't give.
ZIP 18631 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 18246
Rock Glen (18246)
$112,250 median income
- 17859
Orangeville (17859)
$75,515 median income
- 18635
Nescopeck (18635)
$73,480 median income
- 17985
Zion Grove (17985)
$71,979 median income
- 17878
Stillwater (17878)
$68,125 median income
- 17820
Catawissa (17820)
$67,685 median income
- 17815
Bloomsburg (17815)
$67,510 median income
- 18603
Berwick (18603)
$60,352 median income
- 18631
Mifflinville (18631)
$46,125 median income
What this shows By household income, ZIP 18631 ranks #9 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 18635 | Nescopeck, PA | 3,881 | 5.3 mi |
| 18603 | Berwick, PA | 19,320 | 4.7 mi |
| 17815 | Bloomsburg, PA | 30,967 | 6.3 mi |
| 17878 | Stillwater, PA | 1,528 | 9.9 mi |
| 17859 | Orangeville, PA | 3,106 | 7.7 mi |
| 18246 | Rock Glen, PA | 143 | 7.5 mi |
| 17985 | Zion Grove, PA | 1,226 | 9.2 mi |
| 17820 | Catawissa, PA | 5,556 | 10.6 mi |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 18631, both outside PA so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (1,286 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Columbia County
Related Areas
Frequently Asked Questions
What county is ZIP code 18631 in?
ZIP code 18631 (Mifflinville) is located in Columbia County, Pennsylvania. Columbia County contains multiple ZIP codes, see the full list at /counties/columbia-pa.
What is the population of ZIP code 18631?
ZIP code 18631 in Mifflinville, PA has a population of 1,286 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 18631?
The median household income in ZIP 18631 is $46,125, which is 40% below the national average of $76,288.
What is the average home value in ZIP 18631?
The median home value in ZIP 18631 is $214,100, which is 23% below the national average of $278,155.
What is the demographic makeup of ZIP 18631?
The largest racial group in ZIP 18631 is White at 95.3%. Hispanic or Latino residents make up 3.2% of the population.
How many businesses are in ZIP code 18631?
ZIP code 18631 has 27 business establishments employing approximately 335 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 18631?
The top industries by establishment count in ZIP 18631 are: Construction (5), Accommodation and food services (5), Retail trade (4). There are 4 industry sectors represented in total.
What is the education level in ZIP code 18631?
In ZIP code 18631, 88.0% of residents aged 25+ have a high school diploma or higher, and 29.6% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 18631?
In ZIP code 18631, approximately 78.3% of occupied housing units are owner-occupied and 21.7% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 18631?
The poverty rate in ZIP code 18631 is 14.2% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
Take this with you
What to do with ZIP 18631's numbers, next.
- See how ZIP 18631 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Mifflinville, PA ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
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ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.