ZIP Code 18104 - Allentown Pennsylvania

ZIP Code 18104 is located in Allentown Pennsylvania. Portions of 18104 are also in Cetronia and Dorneyville and Fullerton and Wescosville and South Whitehall Township and North Whitehall Township and Upper Macungie Township and Whitehall Township and Lower Macungie Township. 18104 is entirely within Lehigh County. Regionally, it is located in Metro Philadelphia.

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ZIP Code 18104 Quick Stats

ZIP Code NameAllentown
Primary CountyLehigh County
ZIP Code TypeStandard
Population (2022)46,259
Area Code(s)484 / 610 / 835
Current Time

ZIP Code 18104 Map

18104 Demographics

18104 can be classified socioeconomically as 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 18104 is White. The majority race/ethnicity attending public schools in 18104 is Hispanic. The current unemployment level in 18104 is 6.9%.

Population Growth Rate3.11%
Population Density1,966 People per Square Mile
Total Households16,587
Percentage High Income Households6.7%
Median Household Income (2021)$76,972
Average Adjusted Gross Income (2021)$562,800
Current Unemployment Rate (May 2024)6.9%
Majority Race/EthnictyWhite - 72.48%
Public School Majority Race/EthnictyHispanic - 41.33%

18104 Race/Ethnicty Breakdown

Native American490.1%
Hawaiian/Pac. Islander240.05%

18104 Public School Race/Ethnicty Breakdown

Native American110.11%
Hawaiian/Pac. Islander120.12%

18104 Educational Attainment Levels

Highest Education Level AttainedTotalPercentage
Less Than 1 Year of College1,2744.5%
Bachelor Degree6,33822.41%
High School Diploma8,32529.43%
No High School Diploma5511.95%
GED or Alternate6582.33%
1 or More Years of College3,44112.17%
Associates Degree2,6319.3%
Masters Degree3,59112.7%
Professional Degree8743.09%
Doctorate Degree6032.13%

18104 Geography

Adjacent ZIP Codes
Cities/Towns in 18104
RegionMetro Philadelphia
Metropolitan/Micropolitan Stat AreaAllentown-Bethlehem-Easton, PA-NJ
Time ZoneEastern Daylight Time
IANA TimezoneAmerica/New_York
Area24 Square Miles

18104 Politics

US Congressional Districts in 18104
Pennsylvania State Senate Districts in 18104
Pennsylvania State House of Representatives Districts in 18104

18104 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

18104 Annual Climate Data

Avg Min Temp (°F)19212938485762605241332440
Avg Max Temp (°F)36394961718084827564524161
Avg Precip (In.)3.72.813.673.654.534.

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