ZIP Code 18103 - Allentown Pennsylvania

ZIP Code 18103 is located in Allentown Pennsylvania. Portions of 18103 are also in Dorneyville and Wescosville and Salisbury Township (Lehigh County) and Lower Macungie Township and South Whitehall Township and Upper Saucon Township. 18103 is entirely within Lehigh County. Regionally, it is located in Metro Philadelphia.

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ZIP Code 18103 Quick Stats

ZIP Code NameAllentown
Primary CountyLehigh County
ZIP Code TypeStandard
Population (2022)48,344
Area Code(s)484 / 610 / 835
Current Time

ZIP Code 18103 Map

18103 Demographics

18103 can be classified socioeconomically as Lower Middle Class class compared to other ZIP Codes in Pennsylvania based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 18103 is White. The majority race/ethnicity attending public schools in 18103 is Hispanic. The current unemployment level in 18103 is 6.9%.

Population Growth Rate4.80%
Population Density2,794 People per Square Mile
Total Households18,476
Percentage High Income Households3.4%
Median Household Income (2021)$66,400
Average Adjusted Gross Income (2021)$569,450
Current Unemployment Rate (May 2024)6.9%
Majority Race/EthnictyWhite - 54.72%
Public School Majority Race/EthnictyHispanic - 54.03%

18103 Race/Ethnicty Breakdown

Native American4870.85%
Hawaiian/Pac. Islander00%

18103 Public School Race/Ethnicty Breakdown

Native American80.17%
Hawaiian/Pac. Islander70.15%

18103 Educational Attainment Levels

Highest Education Level AttainedTotalPercentage
Less Than 1 Year of College2,1377.8%
Bachelor Degree4,40016.05%
High School Diploma9,82535.85%
No High School Diploma3151.15%
GED or Alternate1,1504.2%
1 or More Years of College3,59013.1%
Associates Degree3,07011.2%
Masters Degree2,0817.59%
Professional Degree5872.14%
Doctorate Degree2530.92%

18103 Geography

Adjacent ZIP Codes
Cities/Towns in 18103
RegionMetro Philadelphia
Metropolitan/Micropolitan Stat AreaAllentown-Bethlehem-Easton, PA-NJ
Time ZoneEastern Daylight Time
IANA TimezoneAmerica/New_York
Area17 Square Miles

18103 Politics

US Congressional Districts in 18103
Pennsylvania State Senate Districts in 18103
Pennsylvania State House of Representatives Districts in 18103

18103 Weather and Climate Data

Plant Hardiness ZoneZone 6b: -5F to 0F
Average First Frost DateOctober 11 - 20
Average Last Frost DateApril 21 - 31
Koppen-Geiger Climate ZoneDfa - Humid Continental Hot Summers
Ecoregion67a - Northern Limestone/Dolomite Valleys

18103 Annual Climate Data

Avg Min Temp (°F)19212938485762605241322440
Avg Max Temp (°F)36394961718084827564524161
Avg Precip (In.)3.652.793.653.654.514.

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