Zip code 18103: Allentown, Pennsylvania

Q: What city is zip code 18103?

18103 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 18103 in?

18103 is in Lehigh County, Pennsylvania.

Q: What is the population of 18103?

About 48,746 people live in 18103, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 18103?

The median household income in 18103 is $72,895.

Q: What zip codes are near 18103?

The closest zip codes to 18103 are 18098, 18099, 18101, 18105, 18102.

Residential delivery areaLehigh CountyEastern Time

Population

48,746

Median household income

$73K

U.S. $81K

Median home value

$273K

U.S. $333K

Median rent

$1,368/mo

U.S. $1,413

Median age

39.1

U.S. 38.9

Land area

17 sq mi

2,841 people/sq mi

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

About 18103

18103 is an urban zip code in Allentown, Pennsylvania (Lehigh County), covering 17 sq mi of land. About 48,746 people live here, or 2,841 per square mile. The median resident is 39.1 years old, compared with 38.9 nationally.

The median household earns $72,895 a year, close to the national median of $80,734. 10.3% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $272,700, or 3.7 years of median household income (U.S.: 4.1 years), which makes homes about as affordable as the national average for local earners. 63% of occupied homes are lived in by their owners, and renters pay a median of $1,368 a month.

28% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 24.5 minutes each way, and 9% of workers work from home. The most common jobs among working residents are in transportation and moving goods; office and administrative support; and healthcare. 37% of households speak a language other than English at home, most often Spanish.

How 18103 compares

Sorted from highest to lowest national percentile

Population48,746
79th
U.S. 334,922,499 · PA 13,018,63926th of 1,707 in PA
Healthcare workers11.6%
78th
U.S. 9.7% · PA 11.5%675th of 1,704 in PA
Diversity index62.4
77th
U.S. 61.4 · PA 44.646th of 1,707 in PA
Foreign-born residents20.4%
75th
U.S. 14.1% · PA 7.7%27th of 1,707 in PA
Rent-burdened renters57.5%
75th
U.S. 51.1% · PA 48.2%284th of 1,596 in PA
Population density2,841/sq mi
66th
U.S. 95/sq mi · PA 291/sq mi205th of 1,707 in PA
Unemployment rate5.8%
65th
U.S. 5.2% · PA 5.3%500th of 1,704 in PA
Income inequality (Gini)0.452
64th
U.S. 0.483 · PA 0.474371st of 1,697 in PA
Uninsured rate8%
59th
U.S. 8.4% · PA 5.6%372nd of 1,705 in PA
Residents 65 and older17.3%
55th
U.S. 17.2% · PA 19.5%1,242nd of 1,707 in PA
Residents under 1822.5%
54th
U.S. 22% · PA 20.4%492nd of 1,707 in PA
Per capita income$40,738
52nd
U.S. $44,673 · PA $44,355614th of 1,707 in PA
Median age39.1
50th
U.S. 38.9 · PA 40.91,307th of 1,707 in PA
Median gross rent$1,368
48th
U.S. $1,413 · PA $1,209235th of 1,366 in PA
Poverty rate10.3%
47th
U.S. 12.5% · PA 11.7%761st of 1,699 in PA
Veterans5.6%
47th
U.S. 6.2% · PA 6.1%1,124th of 1,707 in PA
Median household income$72,895
40th
U.S. $80,734 · PA $77,971762nd of 1,617 in PA
Bachelor's degree or higher27.6%
40th
U.S. 35.7% · PA 35.2%583rd of 1,706 in PA
Average commute24.5 min
40th
U.S. 26.4 min · PA 26.3 min1,066th of 1,596 in PA
Broadband access90.9%
40th
U.S. 91% · PA 89.7%567th of 1,698 in PA
Median home value$272,700
38th
U.S. $332,700 · PA $254,500402nd of 1,628 in PA
Homeownership rate63.1%
38th
U.S. 65.2% · PA 69.3%1,461st of 1,698 in PA
Tech workers2.1%
35th
U.S. 3.8% · PA 3.6%672nd of 1,704 in PA
Median earnings per worker$42,778
32nd
U.S. $49,666 · PA $50,5991,118th of 1,693 in PA
Housing vacancy4.5%
28th
U.S. 10.1% · PA 9.2%1,244th of 1,699 in PA
Work from home8.8%
27th
U.S. 15.1% · PA 15.6%1,004th of 1,704 in PA
Self-employed workers6.2%
11th
U.S. 10% · PA 8.2%1,164th of 1,704 in PA
Government workers7.1%
4th
U.S. 14.5% · PA 11.5%1,400th of 1,704 in PA

Measure	18103	Lehigh	PA	U.S.	National percentile	Rank in PA
Population	48,746	378,792	13,018,639	334,922,499	79th	26th of 1,707
Healthcare workers	11.6%	11.8%	11.5%	9.7%	78th	675th of 1,704
Diversity index	62.4	56.7	44.6	61.4	77th	46th of 1,707
Foreign-born residents	20.4%	14.4%	7.7%	14.1%	75th	27th of 1,707
Rent-burdened renters	57.5%	54.9%	48.2%	51.1%	75th	284th of 1,596
Population density	2,841/sq mi	1,097/sq mi	291/sq mi	95/sq mi	66th	205th of 1,707
Unemployment rate	5.8%	5.9%	5.3%	5.2%	65th	500th of 1,704
Income inequality (Gini)	0.452	0.465	0.474	0.483	64th	371st of 1,697
Uninsured rate	8%	6.4%	5.6%	8.4%	59th	372nd of 1,705
Residents 65 and older	17.3%	17.7%	19.5%	17.2%	55th	1,242nd of 1,707
Residents under 18	22.5%	22.3%	20.4%	22%	54th	492nd of 1,707
Per capita income	$40,738	$43,088	$44,355	$44,673	52nd	614th of 1,707
Median age	39.1	39.6	40.9	38.9	50th	1,307th of 1,707
Median gross rent	$1,368	$1,383	$1,209	$1,413	48th	235th of 1,366
Poverty rate	10.3%	11.6%	11.7%	12.5%	47th	761st of 1,699
Veterans	5.6%	5.6%	6.1%	6.2%	47th	1,124th of 1,707
Median household income	$72,895	$80,079	$77,971	$80,734	40th	762nd of 1,617
Bachelor's degree or higher	27.6%	34.2%	35.2%	35.7%	40th	583rd of 1,706
Average commute	24.5 min	24.9 min	26.3 min	26.4 min	40th	1,066th of 1,596
Broadband access	90.9%	90%	89.7%	91%	40th	567th of 1,698
Median home value	$272,700	$300,400	$254,500	$332,700	38th	402nd of 1,628
Homeownership rate	63.1%	65.6%	69.3%	65.2%	38th	1,461st of 1,698
Tech workers	2.1%	2.7%	3.6%	3.8%	35th	672nd of 1,704
Median earnings per worker	$42,778	$47,987	$50,599	$49,666	32nd	1,118th of 1,693
Housing vacancy	4.5%	4.5%	9.2%	10.1%	28th	1,244th of 1,699
Work from home	8.8%	14%	15.6%	15.1%	27th	1,004th of 1,704
Self-employed workers	6.2%	7.6%	8.2%	10%	11th	1,164th of 1,704
Government workers	7.1%	8.3%	11.5%	14.5%	4th	1,400th 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

15%

25–34

11%

35–44

12%

45–54

13%

55–64

10%

65–74

75+

Median age

39.1

Under 18

22.5%

65 and over

17.3%

Race and ethnicity

White45%
Black7%
Hispanic41%
Asian4%
Native American0.0%
Pacific Islander0%
Other1.0%
Multiracial3%

Diversity index

62.4

U.S. 61.4

Foreign-born

20.4%

U.S. 14.1%

Born in state

51.3%

Language spoken at home (households)

English only

64%

Spanish

28%

Other Indo-European

Asian / Pacific

Other

Households

Households: 18,880
Average household size: 2.5
Family households: 68.1%
Married couples: 47%
Living alone: 25.8%
Veterans (of adults): 5.6%
Male / female: 49% / 51%

Income and poverty

Household income distribution

<$25k

12%

$25–50k

20%

$50–75k

20%

$75–100k

14%

$100–150k

15%

$150–200k

$200k+

12%

Median household income

18103

$72,895

Lehigh Co.

$80,079

Pennsylvania

$77,971

United States

$80,734

Per capita income

$40,738

U.S. $44,673

Poverty rate

10.3%

U.S. 12.5%

Households earning $150K+

19.4%

U.S. 23%

Income inequality (Gini)

0.452

U.S. 0.483

Housing

Median home value

18103

$272,700

Lehigh Co.

$300,400

Pennsylvania

$254,500

United States

$332,700

Median gross rent

18103

$1,368

Lehigh Co.

$1,383

Pennsylvania

$1,209

United States

$1,413

Types of housing

Single-family

75%

2–4 units

5–19 units

13%

20+ units

Mobile home

0.3%

Boat, RV, van

Housing units: 19,775
Owner-occupied: 63.1%
Vacant: 4.5%
Median year built: 1964
Median rooms: 5.8
Renters paying 30%+ of income: 57.5%
Renters paying 50%+ of income: 26.3%
Home value to income: 3.7× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

78%

Carpooled

Transit

Walked

Bicycle

0.0%

Worked from home

Other

Commute time (one way)

<10 min

12%

10–19

29%

20–29

29%

30–44

20%

45–59

60+

Average commute

24.5 min

U.S. 26.4 min

Unemployment

5.8%

U.S. 5.2%

In labor force

66.6%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Transportation and moving

16%

Office and admin

12%

Healthcare

12%

Production

10%

Sales

Management

Construction and repair

Cleaning and personal care

Food service

Business and finance

Education

Engineering and science

Computer and math

Legal and social services

Police and fire

Arts, media and sports

Farming, fishing and forestry

0.1%

Industries

Health care and social assistance

17%

Manufacturing

16%

Retail

13%

Transportation, warehousing and utilities

10%

Professional and technical services

Restaurants and hotels

Education

Admin, support and management

Construction

Finance, insurance and real estate

Other services

Wholesale

Public administration

Information

Arts and recreation

Agriculture and mining

0.0%

Median earnings per worker

$42,778

U.S. $49,666

Self-employed

6.2%

U.S. 10%

Government workers

7.1%

U.S. 14.5%

Nonprofit workers

12.9%

U.S. 8.8%

Median earnings by type of work

Type of work	18103	U.S.
Management, business, science and arts	$77,756	$74,888
Service	$26,354	$26,804
Sales and office	$37,791	$40,476
Construction and maintenance	$43,003	$49,199
Production and transportation	$42,362	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

13%

High school

35%

Some college

16%

Associate's

Bachelor's

18%

Graduate

10%

High school graduate or higher: 87.5%
Bachelor's degree or higher: 27.6%
Graduate or professional degree: 9.6%
Households with broadband: 90.9%
Cable, fiber or DSL: 76.5%
No internet access: 7.1%
Without health insurance: 8%
Limited-English households: 11.4%

Geography

City (USPS): Allentown
State: Pennsylvania
County: Lehigh County
Center point: 40.5703° N, 75.4889° W
Land area: 17 sq mi
Water area: 0.1 sq mi
Time zone: Eastern Time (UTC-5, UTC-4 in summer)
Zip type: Residential delivery area

Cities and towns within this zip

Allentown40% of zip
Dorneyville (unincorporated)10% of zip
Wescosville (unincorporated)5% of zip

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

Zip codes near 18103

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
18098	Emmaus, PA · PO box	2.2 mi	—	—	—
18099	Emmaus, PA · PO box	2.2 mi	—	—	—
18101	Allentown, PA	2.5 mi	6,120	$44,773	$171,300
18105	Allentown, PA · PO box	2.6 mi	—	—	—
18102	Allentown, PA	2.7 mi	51,001	$43,085	$163,400
18049	Emmaus, PA	3.3 mi	18,941	$93,694	$315,700
18106	Allentown, PA	4 mi	6,226	$92,813	$412,200
18046	East Texas, PA	4.1 mi	201	—	—
18104	Allentown, PA	4.2 mi	48,683	$94,601	$336,400
18034	Center Valley, PA	4.2 mi	9,209	$153,200	$475,900
18060	Limeport, PA · PO box	4.8 mi	—	—	—
18109	Allentown, PA	5.1 mi	18,446	$58,031	$198,800

Zip codes like 18103 elsewhere

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

Questions about 18103

What city is zip code 18103?

18103 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 18103 in?

18103 is in Lehigh County, Pennsylvania.

What is the population of 18103?

About 48,746 people live in 18103, according to the Census Bureau's American Community Survey.

What time zone is 18103 in?

18103 is in Eastern Time.

What is the median household income in 18103?

The median household income in 18103 is $72,895.

What zip codes are near 18103?

The closest zip codes to 18103 are 18098, 18099, 18101, 18105, 18102.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 18103, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.