Lehigh County GIS Maps
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Lehigh County, Pennsylvania, has 374,557 residents and covers 345.2 square miles. The population grew 7.2% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Lehigh County is 42077.
Allentown is the county's largest population center. Lehigh County also includes 28 zip codes, 10 public school districts and 44 municipalities. Those boundaries help explain why population, schools, and housing can look different from one part of the county to another. The map below shows how those county lines, zip codes, and school districts fit together, and the sections that follow use that same geography to show population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers and sample data. Paid packages add full layers, analytics and database files.
Lehigh County Trends
- Population
- 374,557▴
- Median Home Value
- $276,100▴
- K-12 Enrollment
- 60,931▴
County analytics dashboards with historical trends & projections included in package downloads.
Free starter access previews county maps, lightweight GIS, and sample data. Paid packages unlock full GIS layers, analytics, and database files.
Lehigh County Maps
The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.
County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.
Lehigh County Population
Lehigh County had 374,557 residents in 2020. That was 7.2% higher than in 2010. Lehigh County added 62,467 people between 2000 and 2020, which points to steady long-term growth. Allentown is the largest city in the county, but it accounts for only about 34% of the total population. The county is fairly spread out, with about 1,085 people per square mile. Some of the county's most populated postal areas include Allentown, Allentown and Allentown.
Population Trend in Lehigh County PA
Lehigh County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Lehigh County Zip Codes
Lehigh County has 28 zip codes. Some of the county's most populated zip codes include Allentown (18102), Allentown (18103) and Allentown (18104). Allentown is the largest zip by population, with about 51,567 residents or 14% of the county total. Together, the three largest zips account for about 39% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Lehigh County PA
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 18102 | Allentown | 51,567 | ▴ 3.6% |
| 18103 | Allentown | 48,358 | ▴ 6.7% |
| 18104 | Allentown | 47,289 | ▴ 9.4% |
| 18018 | Bethlehem | 32,388 | ▾ -0.1% |
| 18052 | Whitehall | 29,317 | ▴ 9% |
| Download all zip code data | |||
Lehigh County Zip Code populations and trends per most recent census data.
Lehigh County Demographics
Lehigh County has a median age of 39.3, which makes the county a little younger than Pennsylvania overall. About 22.5% of residents are under 18, while 17.3% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 25 to 44 at about 32% of the population, which points to a solid working-age base. About 33.4% of adults have a bachelor's degree or higher, above the statewide figure of 34.5%. The county has a more diverse population mix, with no single race or ethnicity accounting for all of the local story.
Key Demographics for Lehigh County PA
Median Age
39.3
Under 18
22.5%
Age 65+
17.3%
Bachelor's+
33.4%
Lehigh County School Districts
Lehigh County is served by 10 public school districts with 60,931 students enrolled in 2024. The largest districts on the county map are Allentown City, Bethlehem Area and Parkland. Those three districts account for about 65% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, based on district totals from 2017 to 2024.
Largest School Districts by Enrollment in Lehigh County PA
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Allentown City School District | 16,674 | 27.4% | ▴ 1.4% |
| Bethlehem Area School District | 12,717 | 20.9% | ▾ -0.8% |
| Parkland School District | 9,975 | 16.4% | ▴ 0.2% |
| East Penn School District | 7,815 | 12.8% | ▾ -1.2% |
| Whitehall-Coplay School District | 4,170 | 6.8% | ▴ 0.5% |
| Download all school district data | |||
Lehigh County school district enrollment and trends per most recent NCES reporting data.
Lehigh County Housing & Real Estate
Lehigh County has a median home value of $276,100 and a median gross rent of $1,326. About 65% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run above the Pennsylvania median, while rents come in above the state average. In March 2026, the median listing price was $429,925 and homes spent about 29 days on the market.
Lehigh County Housing Mix
Lehigh County housing mix: owner, renter and vacant units.
Lehigh County Housing Trends
Lehigh County median home value and rent trend (last 5 years).
Businesses in Lehigh County, PA
Lehigh County has 15,692 business listings across 1,002 categories. The largest categories in Lehigh County business listings are Medical Offices (349, 2.2%), Churches & Religious Organizations (328, 2.1%), and Auto Repair (269, 1.7%). The full Lehigh County business listings dataset includes names, categories, addresses and contact details where available. Lehigh County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Lehigh County, PA
| Category | Businesses | Share |
|---|---|---|
| Medical Offices | 349 | 2.2% |
| Churches & Religious Organizations | 328 | 2.1% |
| Auto Repair | 269 | 1.7% |
| Real Estate Agents | 249 | 1.6% |
| Contractors | 208 | 1.3% |
| Parks & Recreation | 198 | 1.3% |
| ATMs | 193 | 1.2% |
| Hair Salons | 184 | 1.2% |
| Beauty Salons | 178 | 1.1% |
| Medical Center | 172 | 1.1% |
Lehigh County Business Listings
| Business | Category | City |
|---|---|---|
| JSR Designs | 3D Printing Service | Fogelsville |
| Pyramid Healthcare Lehigh Valley Residential Treatment Center for Women | Abuse And Addiction Treatment | Catasauqua |
| 'Berg Bookshop | Academic Bookstore | Allentown |
| Riverbend at Allentown | Accommodation | Allentown |
| KB Tax Deviser CPAs | Accountant | Center Valley |
| Fitness Plaza Inc | Active Life | Fogelsville |
| Lee and Zhao Acupuncture | Acupuncture | Allentown |
| Addiction Rehab Allentown | Addiction Rehabilitation Center | Allentown |
| Adoptions From The Heart - Allentown, PA | Adoption Services | Allentown |
| Platinum Plus | Adult Entertainment | Allentown |
| Download Lehigh County business listings | ||
Lehigh County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Lehigh County Basemaps
Lehigh County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.
Get the Full Lehigh County Data Package
This page shows a preview of what's included in the Lehigh County data package. The full package gives you a ready-to-use county data system with GIS layers, historical data, maps, database files and planning tools that save hours of manual data gathering, cleanup and joins. Everything is organized to help you skip data wrangling and start analysis faster.
- 20+ GIS layers for zip codes, school districts, roads, water, boundaries and more
- Historical county demographics, housing, income and trend data
- ZIP code population files and school district enrollment history
- Database files, markdowns, AI-ready prompts and documentation
- Map exports in PNG, JPEG, PDF, SVG and GeoTIFF formats
- Offline-ready data explorer, map and analytics tools
Paid packages support commercial use, client work, and derived outputs. Some package contents may include source-specific attribution or provider notices. See Licensing & Data Source Notices.
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Nearby Counties
Browse county data pages for the counties that border Lehigh County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.