Lehigh County, Pennsylvania

Lehigh County: County in Pennsylvania, United States of America


Lehigh County is a county located in the U.S. state of Pennsylvania. As of the 2010 census, the population was 349,497 and a population density of 387 people per km². After 10 years in 2020 county had an estimated population of 370,802 inhabitants. Its county seat is Allentown. The county was created 211 years ago in 1812.

Quick Facts about Lehigh County

Population : 370,802 (2020)
Country : United States of America
State : Pennsylvania (United States)
Area : 902 km2
Water as percent of area : 0.9%
Land as percent of area : 99.1%
Named for : Lehigh River
Altitude : 541 feet / 165 meters
Capital : Allentown
Establishment : March 03, 1812
Time Zone : America/New_York
Local time : 21:21:26 (30th May 2023)
Density : 411 Pop. per km² as of 2020
Population growth : 5.75% (2010-2020)
Lehigh County locator map
Location of Lehigh County on Pennsylvania map.
2011 - Old Lehigh County Courthouse image
2011 - Old Lehigh County Courthouse
2011 - Old Lehigh County Courthouse image


Lehigh County is located at 40°36'46"N 75°35'33"W (40.6127100, -75.5923700). It has 5 neighbors: Berks County, Bucks County, Montgomery County, Northampton County and Schuylkill County.

Lehigh County map

The largest city of Lehigh County is Allentown with a population of 121,470. Other cities include, Whitehall Township population 24,896, Emmaus population 11,493, Catasauqua population 6,606 and Fountain Hill population 4,713. See all Lehigh County cities & populated places.

Lehigh County Populated Places (more)

Cities, Towns, Neighborhoods & Other Populated Places in Lehigh County.

City Name Population Title
Allentown 121,470 County seat city in Lehigh County, Pennsylvania, USA
Whitehall Township 24,896 Township in Lehigh County, Pennsylvania
Emmaus 11,493 Borough in Lehigh County, Pennsylvania
Ancient Oaks 6,661 Census designated place
Catasauqua 6,606 Borough of Pennsylvania
Weisenberg 5,294 Township in Lehigh County, Pennsylvania
Fountain Hill 4,713 City in Ashley County, Arkansas, United States of America
Slatington 4,311 Borough of Pennsylvania
Hokendauqua 3,378 Census designated place in Whitehall Township, Lehigh County, Pennsylvania
Coplay 3,217 Borough of Pennsylvania
Macungie 3,183 Borough of Pennsylvania
Schnecksville 2,935 Census designated place
Alburtis 2,643 Borough of Pennsylvania
Coopersburg 2,460 Borough of Pennsylvania
Haines 1,561 Township in Centre County, Pennsylvania
Spring Creek 781 Township of Pennsylvania

Lehigh County has 5 neighbours.


The population of Lehigh County increased by 5.75% in 10 years.

Year Population % Change Method
2010 349,497 - census
2011 353,436 1.11% estimation process
2012 354,759 0.37% estimation process
2013 355,341 0.16% estimation process
2014 357,636 0.64% estimation process
2015 359,710 0.58% estimation process
2016 362,298 0.71% estimation process
2017 365,577 0.9% estimation process
2018 368,359 0.76% estimation process
2019 369,318 0.26% estimation process
2020 370,802 0.4% estimation process

Comitatul Lehigh, Comte de Lehigh, Comté de Lehigh, Condado de Lehigh, Condado han Lehigh, Contae Lehigh, Contea di Lehigh, Hrabstwo Lehigh, Konteth Lehigh, Lechaa Kaundi, Lehay srjan, Lehigh, Lehigh Comitatus, Lehigh Kun, Lehigh Kūn, Lehigh konderria, Lehigh megye, Ligaj, Likhaj, Okrug Likhaj, Quan Lehigh, Quận Lehigh, leha'i ka'unti, li ha yi xian, rihai jun, Лихай, Лігай, Округ Лихај, Լեհայ շրջան, شهرستان له‌های، پنسیلوانیا, لی ہائی کاؤنٹی, لیہائی کاؤنٹی، پنسلوانیا, مقاطعة ليهاي, লেহাই কাউন্টি, リーハイ郡, 利哈伊縣

People born in Lehigh County (7)

People born in Lehigh County, including politician Constantine Jacob Erdman, mathematician George Abram Miller, Recipient of the Purple Heart medal Forrest Guth, .


Pennsylvania Other Counties (more counties)

County Name Population Title
Philadelphia County 1,578,487 County in Pennsylvania, United States
Philadelphia 1,578,487 Largest city in Pennsylvania, United States
Allegheny County 1,211,358 County in the southwestern part of the U.
Montgomery County 833,869 County in Pennsylvania, United States
Bucks County 627,987 County in Pennsylvania, United States
Delaware County 566,753 County in Pennsylvania, United States
Lancaster County 546,192 County in Pennsylvania, United States
Chester County 526,759 County in Pennsylvania, United States
York County 450,448 County in Maine, United States
Berks County 421,017 County in Pennsylvania, United States
Croydon 385,346 London borough in South London
Westmoreland County 347,087 County in Pennsylvania, United States
Luzerne County 316,982 County in Pennsylvania, United States
Northampton County 305,892 County in Pennsylvania, United States
Pittsburgh 299,226 County seat in Allegheny County, Pennsylvania, United States
Dauphin County 279,874 County in Pennsylvania, United States