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ZIP code

18103

Allentown, PA

STANDARD

18103 covers Allentown in Lehigh County, with 47,336 people in the ACS 2023 estimate.

Figures are for the Census ZIP Code Tabulation Area (ZCTA), which is not the same as a USPS ZIP code. A PO Box or unique ZIP may have no ZCTA and no demographics. Methodology

ACS 2023 population

47,336

Median household income

$72,545

Median home value

$242,400

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 18103. Methodology

ZIP code map of 18103

Census ZCTA boundary for ZIP 18103 in Allentown, Pennsylvania
Census ZCTA boundary for ZIP 18103 in Allentown, Pennsylvania. A ZCTA is not the same as a USPS ZIP code. Boundaries: U.S. Census Bureau. Methodology · Data sources
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About ZIP code 18103

Type

STANDARD

City

Allentown

County

Lehigh County

Timezone

America/New_York

Area codes

484, 610, 835

Land area

17.2 sq mi

Water area

0.11 sq mi

Households

19,769

Median gross rent

$1,333

More enterprise fields

Timezone
America/New_York
Area Codes
484, 610, 835
World Region
NA
Country
US

Commercial ZIP directory · not ACS

Commercial ZIP directory population_count for ZCTA 18103. Not ACS. Methodology

People in 18103

Race

  • White26,249
  • Black or African American4,179
  • American Indian or Alaska Native226
  • Asian1,343
  • Native Hawaiian and Pacific Islander23
  • Other race9,903
  • Two or more races6,435

Hispanic or Latino (any race): 18,918

Age

  • Under 106,026
  • 10 to 196,100
  • 20 to 296,598
  • 30 to 396,311
  • 40 to 495,706
  • 50 to 596,037
  • 60 to 695,919
  • 70 to 793,582
  • 80 and older2,079

Income and housing in 18103

Poverty rate

11.2%

Median earnings

$38,377

Median household income

$72,545

Median home value

$242,400

Median gross rent

$1,333

Education

  • High school graduate88.1%
  • Bachelor's degree27.5%
  • Graduate degree9.2%

Places covering 18103

Cities and places — Population overlap

Share of this ZIP/ZCTA’s population located within each place, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.

ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology

Counties — Population overlap

Share of this ZIP/ZCTA’s population located within each county, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.

ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology

19.8% of this ZIP is outside city limits (a real overlap row, not missing data).

Population history for 18103

IRS populationACS population
52,94526,472020052023

Hover the chart or read the table below (Year | ACS | IRS).

Population history. Year | ACS population | IRS population. ACS and IRS are separate series. Blank cells mean that source did not publish a count for the year.
YearACS populationIRS population
200542,374
200641,918
200744,492
200842,676
200943,394
201044,380
201147,42443,389
201248,02142,580
201348,52743,160
201448,34043,050
201548,16343,340
201647,15543,270
201746,77743,810
201846,33344,080
201946,39344,280
202046,88444,240
202149,02343,350
202248,34443,800
202347,336

ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.

ZIP codes near 18103

12 nearest ZIP centroids (any distance)

  1. 18101Allentown2.5 miPop 5,789 · Income $41,542
  2. 18102Allentown2.7 miPop 51,315 · Income $40,681
  3. 18049Emmaus3.3 miPop 18,693 · Income $93,924
  4. 18106Allentown4.0 miPop 6,437 · Income $86,361
  5. 18046East Texas4.1 miPop 144 · Income —
  6. 18104Allentown4.2 miPop 47,999 · Income $94,279
  7. 18034Center Valley4.2 miPop 9,501 · Income $134,137
  8. 18109Allentown5.1 miPop 18,117 · Income $55,437
  9. 18087Trexlertown5.6 miPop 609 · Income $63,750
  10. 18032Catasauqua6.0 miPop 9,459 · Income $79,700
  11. 18052Whitehall6.1 miPop 29,271 · Income $69,499
  12. 18018Bethlehem6.3 miPop 32,253 · Income $71,968

ZIP centroids within 2 miles

No other ZIP codes within 2 miles of 18103, measured by Census internal-point centroids. Try a wider radius.

ZIPs within 2 miles of this place

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18103 Allentown, PA

Looking up ZIP codes within 2 miles of 18103 Allentown, PA, measured by centroid distance.

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ZIP code 18103 FAQ

What city is ZIP code 18103 in?
18103 is in Allentown, PA.
What county is 18103 in?
18103 is in Lehigh County.
What is the median household income in 18103?
The median household income in 18103 is $72,545.
Which ZIP codes are near 18103?
Use the radius tool on this page to list ZIP codes within a chosen distance of 18103.