PlainZIP

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
$46,125
Median income
$214,100
Median home value
29.6%
Bachelor's or higher

The verdict

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 Pennsylvania average), while per-capita income is $29,601. Poverty here runs at 14.2%, with unemployment measured at 0.0%. On housing, the median home value is $214,100 (6% below the state average) with median rent at $959 per month, and 78.3% of occupied units 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 -. A geography-based comparison follows: 8 ZIP codes within about 10 miles of 18631, plus 6 more within Columbia County, give a clearer read than the national average alone.

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.

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 · ZIP Code Business Patterns (ZBP) As of 2023

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

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 18631?

47.0

Median Age

49.4%

Male

50.6%

Female

3.2%

Foreign-Born

White 95.3%
African American 1.5%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 3.2%
Hispanic or Latino 3.2%

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

$29,601

Per Capita Income

14.2%

Poverty Rate

0.0%

Unemployment Rate

How ZIP 18631 ranks nationally

Mifflinville, PA household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$46,125 10th percentile higher than 10% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). This entry sits in this band. $60,000–$80,000: 9,980 US ZIPs (33%). Above this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US 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?

High School Graduate or Higher 88.0%
Bachelor's Degree or Higher 29.6%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

533

Total Housing Units

517

Occupied Units

16

Vacant Units

2.13

Avg Household Size

Occupancy Type

Owner 78.3%
Renter 21.7%

$214,100

Median Home Value

-6% vs state

$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.

residents

What this shows Among its immediate neighbors, ZIP 18631 ranks #7 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 18631 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

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.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
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

More ZIP Codes in Columbia County

17815 standard
Bloomsburg, PA
Pop: 30,967
18603 standard
Berwick, PA
Pop: 19,320
17820 standard
Catawissa, PA
Pop: 5,556
17814 standard
Benton, PA
Pop: 4,860
17846 standard
Millville, PA
Pop: 3,738
17859 standard
Orangeville, PA
Pop: 3,106

Related Areas

Columbia County Mifflinville, PA Pennsylvania

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.

Read our methodology to see how this data is sourced, computed, and verified.