Population
384,383
2025
+2.7% since 2020
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. Resident population, July 1 estimate.
Lehigh County had an estimated 384,383 residents in 2025, up 2.7% (9,934 more people) since 2020. That is faster than Pennsylvania as a whole (+0.5%), and the 10th fastest growth of 67 counties in Pennsylvania.
Data as of 2025 · updated
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384,383
2025
+2.7% since 2020
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. Resident population, July 1 estimate.
−688
2025
−1.8 per 1,000 residents
−3,398 in total, 2021–2025
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. People moving in from other U.S. counties minus people moving out.
4.6%
2025
+0.0 pts since 2019
Source: U.S. Bureau of Labor Statistics, Local Area Unemployment Statistics, 2025. Annual average unemployment rate.
394
2025
−61.5% since 2021
1.0 per 1,000 residents
Source: U.S. Census Bureau, Building Permits Survey, 2025. Housing units authorized by building permits in the year.
$80,079
2020–24
+20.9% since 2016–20
Source: U.S. Census Bureau, American Community Survey 5-year estimates, 2020–24. American Community Survey 5-year estimate.
201,146
2023
+10.0% since 2018
Source: U.S. Census Bureau, County Business Patterns, 2023. Paid employees of private employers in mid-March (County Business Patterns).
Net domestic migration was negative in 2025: 688 more people moved out to other U.S. counties than moved in.
Private employers had 201,146 paid employees in mid-March 2023, +10.0% since 2018 (County Business Patterns).
Unemployment averaged 4.6% in 2025.
Builders were authorized to start 394 new homes in 2025, or 1.0 per 1,000 residents.
Median household income was $80,079 in the 2020–24 American Community Survey, +20.9% since 2016–20.
Across the 3,107 U.S. counties with a comparable estimate, its population growth ranks 1,091st.
Part of the Allentown-Bethlehem-Easton, PA-NJ metro area.
Email me when Lehigh County gets new Census numbers: population, building permits, jobs and income. About 4 emails a year, one click to stop.
| Year | Population | Change |
|---|---|---|
| 2025 | 384,383 | +1,444 |
| 2024 | 382,939 | +2,871 |
| 2023 | 380,068 | +3,322 |
| 2022 | 376,746 | +894 |
| 2021 | 375,852 | +1,403 |
| 2020 | 374,449 | – |
Census Bureau population estimates, July 1 of each year.
Lehigh County grew by 9,934 people since 2020 even though 3,398 more residents moved to other U.S. counties than came from them: births outnumbered deaths by 653, and net international migration added 12,588.
| Component | 2025 | 2020–25 | Share |
|---|---|---|---|
| Natural changebirths minus deaths | +210 | +653 | |
| International migrationfrom and to other countries | +1,901 | +12,588 | |
| Domestic migrationfrom and to other U.S. counties | −688 | −3,398 | |
| Census adjustmentbalancing residual | +21 | +91 | |
| Total change | +1,444 | +9,934 |
Census Bureau population estimates, components of change, each year July 1 to June 30. The components add up to the change in the estimate; the Census adjustment is the small balancing figure the Bureau publishes.
| Measure | In Pennsylvania | Among U.S. counties |
|---|---|---|
| Population growth | 10th of 67 | 1,091st of 3,107 |
| Net domestic migration per 1,000 residents | 51st of 67 | 2,197th of 3,108 |
| Private-sector job growth | 3rd of 67 | 682nd of 3,092 |
| Median household income | 13th of 67 | 581st of 3,107 |
| Lowest unemployment rate | 39th of 67 | 2,227th of 3,108 |
| New homes permitted per 1,000 residents | 44th of 67 | 2,070th of 3,005 |
1st = highest (lowest for unemployment). Counties are ranked only against others with a figure for the same period.
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Over 2020–25, Lehigh County's population change (+2.7%) was ahead of 4 of its 6 neighbouring counties, behind 1 (Northampton County) and level with Berks County.
3 of its 6 neighbouring counties had a higher median household income than Lehigh County's $80,079 (2020–24).
| County | Population2025 | Population change2020–25 | Net domestic migration per 1,000 residents2025 | Homes permitted per 1,000 residents2025 | Median household income2020–24 |
|---|---|---|---|---|---|
| Lehigh County, PA This county | 384,383 | +2.7% | −1.8 | 1.0 | $80,079 |
| Northampton County, PA | 324,411 | +3.7% | 3.4 | 3.2 | $89,184 |
| Carbon County, PA | 65,868 | +1.7% | 7.1 | 3.0 | $67,554 |
| Berks County, PA | 440,072 | +2.7% | −0.2 | 1.3 | $79,777 |
| Montgomery County, PA | 877,643 | +2.4% | −0.1 | 2.5 | $113,915 |
| Bucks County, PA | 647,828 | +0.3% | −1.1 | 1.2 | $114,764 |
| Schuylkill County, PA | 145,085 | +1.5% | 8.7 | 1.5 | $68,313 |
Census Bureau population estimates and building permits, American Community Survey 5-year income. Rates per 1,000 residents. – means no figure, or a base too small for a change or rate (it would swing on a few people). A figure from another period shows its year and is left out of the comparison.
Yes. Its population grew 2.7% between 2020 and 2025, about 9,934 more people (Census Bureau population estimates). Pennsylvania as a whole changed +0.5% over the same years. That ranks 10th of 67 counties in Pennsylvania for population growth.
On net, none in 2025: about 688 more people moved out to other U.S. counties than moved in (Census Bureau net domestic migration estimate).
It averaged 4.6% in 2025 (BLS Local Area Unemployment Statistics, annual average).
About 384,383 people, according to the U.S. Census Bureau's population estimate for July 1, 2025.
Private employers there had 201,146 paid employees in mid-March 2023, +10.0% since 2018 (Census Bureau County Business Patterns; government jobs and the self-employed are not counted).
Map, parcel and listing layers cover North and South Carolina only for now. This page and the other Pennsylvania county pages carry the public federal growth figures.
Email me when Lehigh County gets new Census numbers: population, building permits, jobs and income. About 4 emails a year, one click to stop.
Each number shows its own period. Changes compare the latest period with five years earlier (or the earliest period available). Beacon CRE last refreshed these figures on 2026-11-05. Figures come from public federal statistics and are informational only, not investment advice. Check the source before relying on a number. Methodology: how we compute every number. More on every layer: data sources and licences.
Jobs outside North and South Carolina use County Business Patterns (paid private-sector employees in mid-March); wages and government jobs are not included.