Zip code 18109: Allentown, Pennsylvania

Q: What city is zip code 18109?

18109 is assigned to Allentown, Pennsylvania. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 18109 in?

18109 is mostly in Lehigh County, but it extends into 1 other county.

Q: What is the population of 18109?

About 18,446 people live in 18109, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 18109?

The median household income in 18109 is $58,031.

Q: What zip codes are near 18109?

The closest zip codes to 18109 are 18032, 18002, 18018, 18102, 18101.

Residential delivery areaLehigh CountyEastern Time

Population

18,446

Median household income

$58K

U.S. $81K

Median home value

$199K

U.S. $333K

Median rent

$1,331/mo

U.S. $1,413

Median age

36.6

U.S. 38.9

Land area

8.3 sq mi

2,236 people/sq mi

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

About 18109

18109 is a suburban zip code in Allentown, Pennsylvania (Lehigh County), covering 8.3 sq mi of land. About 18,446 people live here, or 2,236 per square mile. The median resident is 36.6 years old, compared with 38.9 nationally.

The median household earns $58,031 a year, 28% below the national median of $80,734. 18.1% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $198,800, or 3.4 years of median household income (U.S.: 4.1 years), which makes homes about as affordable as the national average for local earners. 52% of occupied homes are lived in by their owners, and renters pay a median of $1,331 a month.

16% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 23.3 minutes each way, and 5% of workers work from home. The most common jobs among working residents are in transportation and moving goods; healthcare; and office and administrative support. 56% of households speak a language other than English at home, most often Spanish.

How 18109 compares

Sorted from highest to lowest national percentile

Healthcare workers16.8%
98th
U.S. 9.7% · PA 11.5%178th of 1,704 in PA
Unemployment rate8.2%
88th
WeaknessU.S. 5.2% · PA 5.3%240th of 1,704 in PA
Foreign-born residents25.3%
82nd
U.S. 14.1% · PA 7.7%16th of 1,707 in PA
Poverty rate18.1%
80th
WeaknessU.S. 12.5% · PA 11.7%258th of 1,699 in PA
Diversity index60.5
73rd
U.S. 61.4 · PA 44.660th of 1,707 in PA
Uninsured rate9.7%
69th
U.S. 8.4% · PA 5.6%270th of 1,705 in PA
Rent-burdened renters53.6%
61st
U.S. 51.1% · PA 48.2%386th of 1,596 in PA
Population density2,236/sq mi
60th
U.S. 95/sq mi · PA 291/sq mi249th of 1,707 in PA
Residents under 1822.9%
57th
U.S. 22% · PA 20.4%457th of 1,707 in PA
Tech workers3.1%
54th
U.S. 3.8% · PA 3.6%440th of 1,704 in PA
Income inequality (Gini)0.436
51st
U.S. 0.483 · PA 0.474522nd of 1,697 in PA
Housing vacancy6.5%
49th
U.S. 10.1% · PA 9.2%1,078th of 1,699 in PA
Median gross rent$1,331
45th
U.S. $1,413 · PA $1,209266th of 1,366 in PA
Residents 65 and older14.7%
36th
U.S. 17.2% · PA 19.5%1,450th of 1,707 in PA
Average commute23.3 min
32nd
U.S. 26.4 min · PA 26.3 min1,192nd of 1,596 in PA
Median age36.6
31st
U.S. 38.9 · PA 40.91,451st of 1,707 in PA
Population18,446
28th
U.S. 334,922,499 · PA 13,018,639223rd of 1,707 in PA
Broadband access88.2%
24th
U.S. 91% · PA 89.7%846th of 1,698 in PA
Veterans3.7%
23rd
U.S. 6.2% · PA 6.1%1,443rd of 1,707 in PA
Median home value$198,800
21st
U.S. $332,700 · PA $254,500816th of 1,628 in PA
Median earnings per worker$40,030
21st
U.S. $49,666 · PA $50,5991,346th of 1,693 in PA
Homeownership rate52.1%
20th
WeaknessU.S. 65.2% · PA 69.3%1,577th of 1,698 in PA
Median household income$58,031
18th
WeaknessU.S. $80,734 · PA $77,9711,286th of 1,617 in PA
Per capita income$28,396
15th
WeaknessU.S. $44,673 · PA $44,3551,457th of 1,707 in PA
Bachelor's degree or higher16%
12th
WeaknessU.S. 35.7% · PA 35.2%1,232nd of 1,706 in PA
Work from home5.3%
9th
U.S. 15.1% · PA 15.6%1,342nd of 1,704 in PA
Self-employed workers5.4%
6th
U.S. 10% · PA 8.2%1,268th of 1,704 in PA
Government workers6%
2nd
U.S. 14.5% · PA 11.5%1,473rd of 1,704 in PA

Measure	18109	Lehigh	PA	U.S.	National percentile	Rank in PA
Healthcare workers	16.8%	11.8%	11.5%	9.7%	98th	178th of 1,704
Unemployment rateWeakness	8.2%	5.9%	5.3%	5.2%	88th	240th of 1,704
Foreign-born residents	25.3%	14.4%	7.7%	14.1%	82nd	16th of 1,707
Poverty rateWeakness	18.1%	11.6%	11.7%	12.5%	80th	258th of 1,699
Diversity index	60.5	56.7	44.6	61.4	73rd	60th of 1,707
Uninsured rate	9.7%	6.4%	5.6%	8.4%	69th	270th of 1,705
Rent-burdened renters	53.6%	54.9%	48.2%	51.1%	61st	386th of 1,596
Population density	2,236/sq mi	1,097/sq mi	291/sq mi	95/sq mi	60th	249th of 1,707
Residents under 18	22.9%	22.3%	20.4%	22%	57th	457th of 1,707
Tech workers	3.1%	2.7%	3.6%	3.8%	54th	440th of 1,704
Income inequality (Gini)	0.436	0.465	0.474	0.483	51st	522nd of 1,697
Housing vacancy	6.5%	4.5%	9.2%	10.1%	49th	1,078th of 1,699
Median gross rent	$1,331	$1,383	$1,209	$1,413	45th	266th of 1,366
Residents 65 and older	14.7%	17.7%	19.5%	17.2%	36th	1,450th of 1,707
Average commute	23.3 min	24.9 min	26.3 min	26.4 min	32nd	1,192nd of 1,596
Median age	36.6	39.6	40.9	38.9	31st	1,451st of 1,707
Population	18,446	378,792	13,018,639	334,922,499	28th	223rd of 1,707
Broadband access	88.2%	90%	89.7%	91%	24th	846th of 1,698
Veterans	3.7%	5.6%	6.1%	6.2%	23rd	1,443rd of 1,707
Median home value	$198,800	$300,400	$254,500	$332,700	21st	816th of 1,628
Median earnings per worker	$40,030	$47,987	$50,599	$49,666	21st	1,346th of 1,693
Homeownership rateWeakness	52.1%	65.6%	69.3%	65.2%	20th	1,577th of 1,698
Median household incomeWeakness	$58,031	$80,079	$77,971	$80,734	18th	1,286th of 1,617
Per capita incomeWeakness	$28,396	$43,088	$44,355	$44,673	15th	1,457th of 1,707
Bachelor's degree or higherWeakness	16%	34.2%	35.2%	35.7%	12th	1,232nd of 1,706
Work from home	5.3%	14%	15.6%	15.1%	9th	1,342nd of 1,704
Self-employed workers	5.4%	7.6%	8.2%	10%	6th	1,268th of 1,704
Government workers	6%	8.3%	11.5%	14.5%	2nd	1,473rd 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

16%

5–17

10%

18–24

16%

25–34

16%

35–44

10%

45–54

11%

55–64

65–74

75+

Median age

36.6

Under 18

22.9%

65 and over

14.7%

Race and ethnicity

White31%
Black11%
Hispanic54%
Asian1%
Native American0.0%
Pacific Islander0%
Other0.1%
Multiracial3%

Diversity index

60.5

U.S. 61.4

Foreign-born

25.3%

U.S. 14.1%

Born in state

40.4%

Language spoken at home (households)

English only

44%

Spanish

42%

Other Indo-European

Asian / Pacific

0.5%

Other

Households

Households: 7,030
Average household size: 2.6
Family households: 64.3%
Married couples: 34.4%
Living alone: 30.1%
Veterans (of adults): 3.7%
Male / female: 50% / 50%

Income and poverty

Household income distribution

<$25k

22%

$25–50k

20%

$50–75k

24%

$75–100k

10%

$100–150k

13%

$150–200k

$200k+

Median household income

18109

$58,031

Lehigh Co.

$80,079

Pennsylvania

$77,971

United States

$80,734

Per capita income

$28,396

U.S. $44,673

Poverty rate

18.1%

U.S. 12.5%

Households earning $150K+

10.6%

U.S. 23%

Income inequality (Gini)

0.436

U.S. 0.483

Housing

Median home value

18109

$198,800

Lehigh Co.

$300,400

Pennsylvania

$254,500

United States

$332,700

Median gross rent

18109

$1,331

Lehigh Co.

$1,383

Pennsylvania

$1,209

United States

$1,413

Types of housing

Single-family

67%

2–4 units

5–19 units

16%

20+ units

Mobile home

Boat, RV, van

Housing units: 7,519
Owner-occupied: 52.1%
Vacant: 6.5%
Median year built: 1963
Median rooms: 5.5
Renters paying 30%+ of income: 53.6%
Renters paying 50%+ of income: 29.9%
Home value to income: 3.4× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

72%

Carpooled

15%

Transit

Walked

Bicycle

Worked from home

Other

Commute time (one way)

<10 min

10–19

33%

20–29

29%

30–44

21%

45–59

60+

Average commute

23.3 min

U.S. 26.4 min

Unemployment

8.2%

U.S. 5.2%

In labor force

65%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Transportation and moving

23%

Healthcare

17%

Office and admin

10%

Production

10%

Cleaning and personal care

Management

Sales

Construction and repair

Business and finance

Computer and math

Food service

Education

Legal and social services

Arts, media and sports

Engineering and science

Police and fire

0.6%

Farming, fishing and forestry

Industries

Health care and social assistance

19%

Retail

16%

Transportation, warehousing and utilities

13%

Manufacturing

12%

Admin, support and management

Restaurants and hotels

Wholesale

Other services

Education

Professional and technical services

Construction

Finance, insurance and real estate

Public administration

Arts and recreation

Information

0.5%

Agriculture and mining

0.1%

Median earnings per worker

$40,030

U.S. $49,666

Self-employed

5.4%

U.S. 10%

Government workers

U.S. 14.5%

Nonprofit workers

9.2%

U.S. 8.8%

Median earnings by type of work

Type of work	18109	U.S.
Management, business, science and arts	$52,894	$74,888
Service	$24,991	$26,804
Sales and office	$21,875	$40,476
Construction and maintenance	$46,250	$49,199
Production and transportation	$43,433	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

20%

High school

42%

Some college

13%

Associate's

10%

Bachelor's

13%

Graduate

High school graduate or higher: 80.5%
Bachelor's degree or higher: 16%
Graduate or professional degree: 2.8%
Households with broadband: 88.2%
Cable, fiber or DSL: 65.7%
No internet access: 9.5%
Without health insurance: 9.7%
Limited-English households: 17.3%

Geography

City (USPS): Allentown
State: Pennsylvania
County: Lehigh County
Center point: 40.6355° N, 75.4419° W
Land area: 8.3 sq mi
Water area: 0.2 sq mi
Time zone: Eastern Time (UTC-5, UTC-4 in summer)
Zip type: Residential delivery area

18109 spans 2 counties

Lehigh County95% of land
Northampton County5% of land

Cities and towns within this zip

Allentown44% of zip

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

Zip codes near 18109

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
18032	Catasauqua, PA	2 mi	9,555	$81,098	$222,700
18002	Lehigh Valley, PA · PO box	2.2 mi	—	—	—
18018	Bethlehem, PA	2.5 mi	32,965	$75,417	$250,900
18102	Allentown, PA	2.6 mi	51,001	$43,085	$163,400
18101	Allentown, PA	2.7 mi	6,120	$44,773	$171,300
18105	Allentown, PA · PO box	3.1 mi	—	—	—
18017	Bethlehem, PA	3.3 mi	40,640	$91,173	$336,100
18052	Whitehall, PA	3.6 mi	29,451	$75,665	$262,900
18025	Bethlehem, PA · PO box	3.8 mi	—	—	—
18001	Lehigh Valley, PA · PO box	4.3 mi	—	—	—
18003	Lehigh Valley, PA · PO box	4.3 mi	—	—	—
18016	Bethlehem, PA · PO box	4.3 mi	—	—	—

Zip codes like 18109 elsewhere

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

Questions about 18109

What city is zip code 18109?

18109 is assigned to Allentown, Pennsylvania. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 18109 in?

18109 is mostly in Lehigh County, but it extends into 1 other county.

What is the population of 18109?

About 18,446 people live in 18109, according to the Census Bureau's American Community Survey.

What time zone is 18109 in?

18109 is in Eastern Time.

What is the median household income in 18109?

The median household income in 18109 is $58,031.

What zip codes are near 18109?

The closest zip codes to 18109 are 18032, 18002, 18018, 18102, 18101.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 18109, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.