ZIP Code 18109 - Allentown Pennsylvania
Overview
ZIP Code 18109 is located in Allentown Pennsylvania. Portions of 18109 are also in Bethlehem and Catasauqua and Hanover Township (Lehigh County) and Hanover Township (Northampton County) and East Allen Township and Salisbury Township (Lehigh County). 18109 is primarily within Lehigh County, with some portions in Northampton County. Regionally, 18109 is located in Metro Philadelphia.
ZIP Code 18109 Quick Stats
| ZIP Code Name | Allentown |
| Primary County | Lehigh County |
| ZIP Code Type | Standard |
| Population (2022) | 17,745 |
| Area Code(s) | 484 / 610 / 835 |
| Current Time | EDT |
ZIP Code 18109 Map
18109 Demographics
18109 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 18109 is White. The majority race/ethnicity attending public schools in 18109 is Hispanic. The current unemployment level in 18109 is 4.1%.
| Population | 17,745 |
| Population Growth Rate | -1.73% |
| Population Density | 1,819 People per Square Mile |
| Total Households | 6,385 |
| Percentage High Income Households | 0.5% |
| Median Household Income (2021) | $48,065 |
| Average Adjusted Gross Income (2021) | $325,680 |
| Current Unemployment Rate (May 2026) | 4.1% |
| Sales Tax Rate (2025) | 6% |
| Majority Race/Ethnicity | White - 45.1% |
| Public School Majority Race/Ethnicity | Hispanic - 73.34% |
18109 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 9,833 | 45.1% |
| Black | 2,660 | 12.2% |
| Hispanic | 8,856 | 40.61% |
| Asian | 409 | 1.88% |
| Native American | 47 | 0.22% |
| Hawaiian/Pac. Islander | 0 | 0% |
18109 Public School Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 447 | 9.15% |
| Black | 736 | 15.07% |
| Hispanic | 3,653 | 74.8% |
| Asian | 38 | 0.78% |
| Native American | 6 | 0.12% |
| Hawaiian/Pac. Islander | 4 | 0.08% |
18109 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 543 | 6.01% |
| Bachelor Degree | 998 | 11.04% |
| High School Diploma | 3,642 | 40.28% |
| No High School Diploma | 351 | 3.88% |
| GED or Alternate | 723 | 8% |
| 1 or More Years of College | 1,220 | 13.49% |
| Associates Degree | 1,016 | 11.24% |
| Masters Degree | 371 | 4.1% |
| Professional Degree | 103 | 1.14% |
| Doctorate Degree | 74 | 0.82% |
18109 Geography
| Coordinates | 40.63835526, -75.4393158 |
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| Neighborhoods in 18109 | |
| Region | Metro Philadelphia |
| Metropolitan/Micropolitan Stat Area | Allentown-Bethlehem-Easton, PA-NJ |
| Time Zone | Eastern Daylight Time |
| IANA Timezone | America/New_York |
| Area | 10 Square Miles |
18109 Schools
| School Districts in 18109 | |
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| Middle Schools in 18109 | |
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18109 Weather and Climate Data
| Plant Hardiness Zone | Zone 6b: -5F to 0F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | October 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | April 21 - 31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Dfa - Humid Continental Hot Summers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 67a - Northern Limestone/Dolomite Valleys | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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