Zip code 18631: Mifflinville, Pennsylvania

Q: What city is zip code 18631?

18631 is assigned to Mifflinville, Pennsylvania. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 18631 in?

18631 is in Columbia County, Pennsylvania.

Q: What is the population of 18631?

About 1,100 people live in 18631, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 18631?

The median household income in 18631 is $46,125.

Q: What zip codes are near 18631?

The closest zip codes to 18631 are 18603, 18635, 17815, 18601, 18246.

Residential delivery areaColumbia CountyEastern Time

Population

1,100

Median household income

$46K

U.S. $81K

Median home value

$214K

U.S. $333K

Median rent

$959/mo

U.S. $1,413

Median age

U.S. 38.9

Land area

1.4 sq mi

774 people/sq mi

Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.

About 18631

18631 is a suburban zip code in Mifflinville, Pennsylvania (Columbia County), covering 1.4 sq mi of land. About 1,100 people live here, or 774 per square mile. The median resident is 47 years old, compared with 38.9 nationally.

The median household earns $46,125 a year, 43% below the national median of $80,734. 14.2% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $214,100, or 4.6 years of median household income (U.S.: 4.1 years), which makes homes about as affordable as the national average for local earners. 78% of occupied homes are lived in by their owners, and renters pay a median of $959 a month.

30% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 21.3 minutes each way, and 16% of workers work from home. The most common jobs among working residents are in transportation and moving goods; healthcare; and management.

How 18631 compares

Sorted from highest to lowest national percentile

Healthcare workers19.6%
99th
U.S. 9.7% · PA 11.5%102nd of 1,704 in PA
Residents 65 and older24.9%
92nd
U.S. 17.2% · PA 19.5%419th of 1,707 in PA
Median age47
91st
U.S. 38.9 · PA 40.9588th of 1,707 in PA
Income inequality (Gini)0.484
83rd
WeaknessU.S. 0.483 · PA 0.474162nd of 1,697 in PA
Homeownership rate78.3%
74th
U.S. 65.2% · PA 69.3%937th of 1,698 in PA
Veterans7.4%
71st
U.S. 6.2% · PA 6.1%686th of 1,707 in PA
Poverty rate14.2%
66th
U.S. 12.5% · PA 11.7%426th of 1,699 in PA
Work from home15.8%
64th
U.S. 15.1% · PA 15.6%408th of 1,704 in PA
Self-employed workers10.5%
64th
U.S. 10% · PA 8.2%473rd of 1,704 in PA
Median earnings per worker$47,115
47th
U.S. $49,666 · PA $50,599792nd of 1,693 in PA
Bachelor's degree or higher29.6%
45th
U.S. 35.7% · PA 35.2%506th of 1,706 in PA
Uninsured rate6.2%
44th
U.S. 8.4% · PA 5.6%536th of 1,705 in PA
Rent-burdened renters48.5%
41st
U.S. 51.1% · PA 48.2%571st of 1,596 in PA
Population density774/sq mi
39th
U.S. 95/sq mi · PA 291/sq mi534th of 1,707 in PA
Residents under 1820.2%
33rd
U.S. 22% · PA 20.4%780th of 1,707 in PA
Median home value$214,100
24th
U.S. $332,700 · PA $254,500716th of 1,628 in PA
Average commute21.3 min
19th
StrengthU.S. 26.4 min · PA 26.3 min1,350th of 1,596 in PA
Foreign-born residents3.2%
19th
U.S. 14.1% · PA 7.7%562nd of 1,707 in PA
Per capita income$29,601
18th
WeaknessU.S. $44,673 · PA $44,3551,389th of 1,707 in PA
Median gross rent$959
18th
U.S. $1,413 · PA $1,209731st of 1,366 in PA
Housing vacancy3%
11th
U.S. 10.1% · PA 9.2%1,396th of 1,699 in PA
Median household income$46,125
6th
WeaknessU.S. $80,734 · PA $77,9711,527th of 1,617 in PA
Diversity index9.1
3rd
U.S. 61.4 · PA 44.61,185th of 1,707 in PA
Government workers6.1%
2nd
U.S. 14.5% · PA 11.5%1,465th of 1,704 in PA
Population1,100
1st
U.S. 334,922,499 · PA 13,018,6391,127th of 1,707 in PA
Unemployment rate0%
1st
StrengthU.S. 5.2% · PA 5.3%1,539th of 1,704 in PA
Broadband access67.5%
1st
WeaknessU.S. 91% · PA 89.7%1,638th of 1,698 in PA
Tech workers0%
1st
U.S. 3.8% · PA 3.6%1,380th of 1,704 in PA

Measure	18631	Columbia	PA	U.S.	National percentile	Rank in PA
Healthcare workers	19.6%	12.4%	11.5%	9.7%	99th	102nd of 1,704
Residents 65 and older	24.9%	20.3%	19.5%	17.2%	92nd	419th of 1,707
Median age	47	41	40.9	38.9	91st	588th of 1,707
Income inequality (Gini)Weakness	0.484	0.436	0.474	0.483	83rd	162nd of 1,697
Homeownership rate	78.3%	69.5%	69.3%	65.2%	74th	937th of 1,698
Veterans	7.4%	6.2%	6.1%	6.2%	71st	686th of 1,707
Poverty rate	14.2%	13.7%	11.7%	12.5%	66th	426th of 1,699
Work from home	15.8%	12.9%	15.6%	15.1%	64th	408th of 1,704
Self-employed workers	10.5%	7.7%	8.2%	10%	64th	473rd of 1,704
Median earnings per worker	$47,115	$42,975	$50,599	$49,666	47th	792nd of 1,693
Bachelor's degree or higher	29.6%	26.6%	35.2%	35.7%	45th	506th of 1,706
Uninsured rate	6.2%	4%	5.6%	8.4%	44th	536th of 1,705
Rent-burdened renters	48.5%	42%	48.2%	51.1%	41st	571st of 1,596
Population density	774/sq mi	135/sq mi	291/sq mi	95/sq mi	39th	534th of 1,707
Residents under 18	20.2%	17.6%	20.4%	22%	33rd	780th of 1,707
Median home value	$214,100	$206,200	$254,500	$332,700	24th	716th of 1,628
Average commuteStrength	21.3 min	21.7 min	26.3 min	26.4 min	19th	1,350th of 1,596
Foreign-born residents	3.2%	2.8%	7.7%	14.1%	19th	562nd of 1,707
Per capita incomeWeakness	$29,601	$33,218	$44,355	$44,673	18th	1,389th of 1,707
Median gross rent	$959	$943	$1,209	$1,413	18th	731st of 1,366
Housing vacancy	3%	11.6%	9.2%	10.1%	11th	1,396th of 1,699
Median household incomeWeakness	$46,125	$64,644	$77,971	$80,734	6th	1,527th of 1,617
Diversity index	9.1	17.8	44.6	61.4	3rd	1,185th of 1,707
Government workers	6.1%	13.4%	11.5%	14.5%	2nd	1,465th of 1,704
Population	1,100	65,362	13,018,639	334,922,499	1st	1,127th of 1,707
Unemployment rateStrength	0%	6%	5.3%	5.2%	1st	1,539th of 1,704
Broadband accessWeakness	67.5%	87.8%	89.7%	91%	1st	1,638th of 1,698
Tech workers	0%	2.7%	3.6%	3.8%	1st	1,380th of 1,704

The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.

People

Age

Under 5

15%

5–17

18–24

14%

25–34

35–44

20%

45–54

55–64

12%

65–74

13%

75+

Median age

Under 18

20.2%

65 and over

24.9%

Race and ethnicity

White95%
Black2%
Hispanic3%
Asian0%
Native American0%
Pacific Islander0%
Other0%
Multiracial0%

Diversity index

9.1

U.S. 61.4

Foreign-born

3.2%

U.S. 14.1%

Born in state

84.5%

Language spoken at home (households)

English only

100%

Spanish

Other Indo-European

Asian / Pacific

Other

Households

Households: 517
Average household size: 2.1
Family households: 53.6%
Married couples: 40.2%
Living alone: 41.8%
Veterans (of adults): 7.4%
Male / female: 49% / 51%

Income and poverty

Household income distribution

<$25k

40%

$25–50k

14%

$50–75k

11%

$75–100k

$100–150k

28%

$150–200k

$200k+

Median household income

18631

$46,125

Columbia Co.

$64,644

Pennsylvania

$77,971

United States

$80,734

Per capita income

$29,601

U.S. $44,673

Poverty rate

14.2%

U.S. 12.5%

Households earning $150K+

4.8%

U.S. 23%

Income inequality (Gini)

0.484

U.S. 0.483

Housing

Median home value

18631

$214,100

Columbia Co.

$206,200

Pennsylvania

$254,500

United States

$332,700

Median gross rent

18631

$959

Columbia Co.

$943

Pennsylvania

$1,209

United States

$1,413

Types of housing

Single-family

100%

2–4 units

5–19 units

20+ units

Mobile home

Boat, RV, van

Housing units: 533
Owner-occupied: 78.3%
Vacant: 3%
Median year built: 1967
Median rooms: 5.5
Renters paying 30%+ of income: 48.5%
Renters paying 50%+ of income: 33.8%
Home value to income: 4.6× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

82%

Carpooled

0.6%

Transit

Walked

Bicycle

Worked from home

16%

Other

Commute time (one way)

<10 min

10–19

27%

20–29

55%

30–44

45–59

60+

Average commute

21.3 min

U.S. 26.4 min

Unemployment

U.S. 5.2%

In labor force

57%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Transportation and moving

21%

Healthcare

20%

Management

14%

Office and admin

14%

Education

10%

Cleaning and personal care

Sales

Production

Business and finance

Legal and social services

Construction and repair

Computer and math

Engineering and science

Arts, media and sports

Police and fire

Food service

Farming, fishing and forestry

Industries

Health care and social assistance

18%

Manufacturing

17%

Restaurants and hotels

17%

Education

13%

Retail

11%

Transportation, warehousing and utilities

Admin, support and management

Finance, insurance and real estate

Other services

Professional and technical services

Wholesale

Construction

Public administration

Information

Arts and recreation

Agriculture and mining

Median earnings per worker

$47,115

U.S. $49,666

Self-employed

10.5%

U.S. 10%

Government workers

6.1%

U.S. 14.5%

Nonprofit workers

12.1%

U.S. 8.8%

Median earnings by type of work

Type of work	18631	U.S.
Management, business, science and arts	$60,352	$74,888
Service	$23,194	$26,804
Sales and office	$26,746	$40,476
Construction and maintenance	—	$49,199
Production and transportation	$48,750	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

58%

Some college

Associate's

Bachelor's

17%

Graduate

13%

High school graduate or higher: 96.8%
Bachelor's degree or higher: 29.6%
Graduate or professional degree: 13%
Households with broadband: 67.5%
Cable, fiber or DSL: 57.4%
No internet access: 32.5%
Without health insurance: 6.2%
Limited-English households: 0%

Geography

City (USPS): Mifflinville
State: Pennsylvania
County: Columbia County
Center point: 41.0307° N, 76.3028° W
Land area: 1.4 sq mi
Water area: 0.2 sq mi
Time zone: Eastern Time (UTC-5, UTC-4 in summer)
Zip type: Residential delivery area

Cities and towns within this zip

Mifflinville (unincorporated)89% of zip

Census places overlapping the zip's area. Mail may use a different city name than the municipality.

Zip codes near 18631

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
18603	Berwick, PA	4.6 mi	18,827	$60,352	$170,500
18635	Nescopeck, PA	5.3 mi	3,734	$73,480	$195,800
17815	Bloomsburg, PA	6.6 mi	29,790	$67,510	$222,900
18601	Beach Haven, PA · PO box	7.1 mi	—	—	—
18246	Rock Glen, PA	7.6 mi	84	$112,250	$167,000
17859	Orangeville, PA	7.8 mi	2,701	$75,515	$224,800
17985	Zion Grove, PA	8.4 mi	1,237	$71,979	$179,700
18241	Nuremberg, PA	9.3 mi	249	$83,750	$94,500
17878	Stillwater, PA	10 mi	1,488	$68,125	$214,100
18249	Sugarloaf, PA	10 mi	4,191	$97,593	$298,400
18256	Weston, PA	10 mi	185	$57,750	$155,000
17820	Catawissa, PA	11 mi	5,499	$67,685	$214,800

Zip codes like 18631 elsewhere

Matched on income, home values, age, density, education, housing and commuting

Questions about 18631

What city is zip code 18631?

18631 is assigned to Mifflinville, Pennsylvania. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 18631 in?

18631 is in Columbia County, Pennsylvania.

What is the population of 18631?

About 1,100 people live in 18631, according to the Census Bureau's American Community Survey.

What time zone is 18631 in?

18631 is in Eastern Time.

What is the median household income in 18631?

The median household income in 18631 is $46,125.

What zip codes are near 18631?

The closest zip codes to 18631 are 18603, 18635, 17815, 18601, 18246.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 18631, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.