Zip Code 18102
Allentown, Pennsylvania — Lehigh County
📍 ZIP code 18102 is in Allentown, Lehigh County, Pennsylvania.
ZIP code 18102 is located in Allentown, Lehigh County, Pennsylvania. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 51,315. The area code for ZIP code 18102 is 570.
Quick Answer
Zip code 18102 is in Allentown, Pennsylvania (Lehigh County). It has a population of 51,315, median household income of $40,681, and median home value of $146,600.
Population
51,315
Income
$40,681
Home Value
$146,600
Climate
86°F / 22°F
About Zip Code 18102
Zip code 18102 is located in Allentown, Pennsylvania, within Lehigh County. Home to approximately 51,315 residents, this area sits at an elevation of 358 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 570.
The median household income is $40,681 per year, which is below the national median of $70,784. Homes in this zip code have a median value of $146,600, and the cost of living index is 60 (40% below the national average of 100).
Summers average a high of 86°F while winters drop to 22°F. The area receives about 47 in of rain and 33 in of snow annually. The zip code covers 3 square miles of land area and 0.1 square miles of water.
Key Statistics
51,315
$40,681
$146,600
Eastern (EST/EDT)
570
358 ft
3 sq mi
30.8
18,788
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Compare With Nearby Zip Codes
| Metric | 18102 | 18101 | 18103 | 18032 | 18052 | 18104 |
|---|---|---|---|---|---|---|
| City | Allentown, PA | Allentown, PA | Allentown, PA | Allentown, PA | Whitehall, PA | Allentown, PA |
| Population | 51,315 | 5,789 | 47,336 | 9,459 | 29,271 | 47,999 |
| Median Income | $40,681 | $41,542 | $72,545 | $79,700 | $69,499 | $94,279 |
| Home Value | $146,600 | $153,800 | $242,400 | $213,500 | $247,100 | $296,800 |
| Cost of Living | 60 | 60 | 86 | 79 | 87 | 105 |
| Median Age | 30.8 | 30.3 | 39.8 | 39.9 | 39.6 | 39.3 |
Cost of Living
100 = National Average. Allentown's cost of living is 40% below the national average.
vs. State Avg
Below
Affordability
Very Affordable
Income-to-Home
3.6x
Demographics
Zip code 18102 has a population of 51,315 people with a median age of 30.8. There are 18,788 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Allentown (18102) population trend from 2010 to 2024
↓ -22.1%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
86°F
22°F
47 in
33 in
Allentown experiences warm summers with average highs around 86°F. Winters are cool with lows averaging 22°F. With 33 in of annual snowfall, residents should be prepared for significant winter weather.
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Housing & Economy
Median Home Value
$146,600
Median Household Income
$40,681
With 18,788 housing units across 3 square miles, 18102 has a housing density of 6,263 units per square mile. The home price-to-income ratio is 3.6x.
Location & Geography
Latitude
40.6085°
Longitude
-75.4763°
Land Area
3 sq mi
Water Area
0.1 sq mi
Nearby Zip Codes
Zip codes closest to 18102 (Allentown, PA) with distances:
All Zip Codes in Allentown, PA
Other zip codes serving Allentown:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 18102's $40,681. A way to compare Allentown to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 18102 (Allentown, PA). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Allentown, Pennsylvania?
Allentown, Pennsylvania uses zip code 18102 along with 7 other zip codes.
What county is zip code 18102 in?
Zip code 18102 is located in Lehigh County, Pennsylvania.
What is the population of zip code 18102?
The population of zip code 18102 is 51,315 with a median age of 30.8.
Is 18102 in Allentown, Pennsylvania?
Yes, zip code 18102 is in Allentown, Lehigh County, Pennsylvania. The area code is 570.
Frequently Asked Questions
What city is zip code 18102 in?
Zip code 18102 is in Allentown, Pennsylvania. It is part of Lehigh County and uses the Eastern (EST/EDT) timezone.
What is zip code 18102?
Zip code 18102 is a U.S. postal code in Allentown, Pennsylvania (Lehigh County). It has a population of 51,315 and covers 3 square miles.
What is the population of zip code 18102?
The population of zip code 18102 (Allentown, PA) is 51,315 with a median age of 30.8. There are approximately 18,788 housing units in this area.
What is the median income in zip code 18102?
The median household income in zip code 18102 (Allentown, PA) is $40,681 per year. The cost of living index is 60 (100 = national average).
What is the average home price in zip code 18102?
The median home value in zip code 18102 (Allentown, PA) is $146,600. The cost of living index is 60 compared to the national average of 100.
What county is zip code 18102 in?
Zip code 18102 is located in Lehigh County, Pennsylvania. The primary city is Allentown.
What is the area code for zip code 18102?
Zip code 18102 in Allentown, PA uses area code 570. It is located in the Eastern (EST/EDT) timezone.
Is zip code 18102 a good place to live?
Zip code 18102 (Allentown, PA) has a cost of living index of 60 (100 = national average), a median household income of $40,681, and median home values of $146,600. The median age is 30.8. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 18102?
The cost of living index for zip code 18102 (Allentown, PA) is 60, where 100 represents the national average. This area is below the national average. Median home value: $146,600.
What schools serve zip code 18102?
Zip code 18102 in Allentown, Pennsylvania is served by the local school district of Lehigh County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.