Zip Code 17603
Lancaster, Pennsylvania — Lancaster County
📍 ZIP code 17603 is in Lancaster, Lancaster County, Pennsylvania.
ZIP code 17603 is located in Lancaster, Lancaster County, Pennsylvania. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 66,788. The area code for ZIP code 17603 is 717.
Quick Answer
Zip code 17603 is in Lancaster, Pennsylvania (Lancaster County). It has a population of 66,788, median household income of $77,156, and median home value of $244,500.
Population
66,788
Income
$77,156
Home Value
$244,500
Climate
87°F / 22°F
About Zip Code 17603
Zip code 17603 is located in Lancaster, Pennsylvania, within Lancaster County. Home to approximately 66,788 residents, this area sits at an elevation of 390 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 717.
The median household income is $77,156 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $244,500, and the cost of living index is 92 (8% below the national average of 100).
Summers average a high of 87°F while winters drop to 22°F. The area receives about 44 in of rain and 21 in of snow annually. The zip code covers 29.8 square miles of land area and 0.4 square miles of water.
Key Statistics
66,788
$77,156
$244,500
Eastern (EST/EDT)
717
390 ft
29.8 sq mi
35.5
28,142
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Compare With Nearby Zip Codes
| Metric | 17603 | 17601 | 17551 | 17602 | 17520 | 17554 |
|---|---|---|---|---|---|---|
| City | Lancaster, PA | Lancaster, PA | Millersville, PA | Lancaster, PA | East Petersburg, PA | Mountville, PA |
| Population | 66,788 | 56,348 | 11,884 | 51,461 | 5,001 | 7,561 |
| Median Income | $77,156 | $96,433 | $69,729 | $71,752 | $86,489 | $95,516 |
| Home Value | $244,500 | $324,000 | $273,000 | $250,600 | $252,800 | $270,600 |
| Cost of Living | 92 | 113 | 92 | 87 | 96 | 99 |
| Median Age | 35.5 | 43 | 24.4 | 37.5 | 45.3 | 40.3 |
Cost of Living
100 = National Average. Lancaster's cost of living is 8% below the national average.
vs. State Avg
Below
Affordability
Affordable
Income-to-Home
3.2x
Demographics
Zip code 17603 has a population of 66,788 people with a median age of 35.5. There are 28,142 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Lancaster (17603) population trend from 2010 to 2024
↑ 7.6%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
87°F
22°F
44 in
21 in
Lancaster experiences warm summers with average highs around 87°F. Winters are cool with lows averaging 22°F. The area receives about 21 in of snow per year.
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Housing & Economy
Median Home Value
$244,500
Median Household Income
$77,156
With 28,142 housing units across 29.8 square miles, 17603 has a housing density of 944 units per square mile. The home price-to-income ratio is 3.2x.
Location & Geography
Latitude
40.0308°
Longitude
-76.3304°
Land Area
29.8 sq mi
Water Area
0.4 sq mi
Nearby Zip Codes
Zip codes closest to 17603 (Lancaster, PA) with distances:
All Zip Codes in Lancaster, PA
Other zip codes serving Lancaster:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 17603's $77,156. A way to compare Lancaster 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 17603 (Lancaster, 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 Lancaster, Pennsylvania?
Lancaster, Pennsylvania uses zip code 17603 along with 2 other zip codes.
What county is zip code 17603 in?
Zip code 17603 is located in Lancaster County, Pennsylvania.
What is the population of zip code 17603?
The population of zip code 17603 is 66,788 with a median age of 35.5.
Is 17603 in Lancaster, Pennsylvania?
Yes, zip code 17603 is in Lancaster, Lancaster County, Pennsylvania. The area code is 717.
Frequently Asked Questions
What city is zip code 17603 in?
Zip code 17603 is in Lancaster, Pennsylvania. It is part of Lancaster County and uses the Eastern (EST/EDT) timezone.
What is zip code 17603?
Zip code 17603 is a U.S. postal code in Lancaster, Pennsylvania (Lancaster County). It has a population of 66,788 and covers 29.8 square miles.
What is the population of zip code 17603?
The population of zip code 17603 (Lancaster, PA) is 66,788 with a median age of 35.5. There are approximately 28,142 housing units in this area.
What is the median income in zip code 17603?
The median household income in zip code 17603 (Lancaster, PA) is $77,156 per year. The cost of living index is 92 (100 = national average).
What is the average home price in zip code 17603?
The median home value in zip code 17603 (Lancaster, PA) is $244,500. The cost of living index is 92 compared to the national average of 100.
What county is zip code 17603 in?
Zip code 17603 is located in Lancaster County, Pennsylvania. The primary city is Lancaster.
What is the area code for zip code 17603?
Zip code 17603 in Lancaster, PA uses area code 717. It is located in the Eastern (EST/EDT) timezone.
Is zip code 17603 a good place to live?
Zip code 17603 (Lancaster, PA) has a cost of living index of 92 (100 = national average), a median household income of $77,156, and median home values of $244,500. The median age is 35.5. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 17603?
The cost of living index for zip code 17603 (Lancaster, PA) is 92, where 100 represents the national average. This area is below the national average. Median home value: $244,500.
What schools serve zip code 17603?
Zip code 17603 in Lancaster, Pennsylvania is served by the local school district of Lancaster 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.