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Lehigh County
Old Lehigh County Courthouse in Allentown, built between 1814 and 1819
Old Lehigh County Courthouse in Allentown, built between 1814 and 1819
Flag of Lehigh County
Flag
Official seal of Lehigh County
Seal
Map of Pennsylvania highlighting Lehigh County
Location within the U.S. state of Pennsylvania
Map of the United States highlighting Pennsylvania
Pennsylvania's location within the U.S.
Country  United States
State  Pennsylvania
Founded March 6, 1812
Named for Lehigh River
Seat Allentown
Largest city Allentown
Area
 • Total 348 sq mi (900 km2)
 • Land 345 sq mi (890 km2)
 • Water 3.1 sq mi (8 km2)  0.9%%
Population
 (2020)
 • Total 374,557
 • Density 1,046/sq mi (404/km2)
Time zone UTC−5 (Eastern)
 • Summer (DST) UTC−4 (EDT)
Congressional district 7th

Lehigh County is a county in the state of Pennsylvania. It is home to over 374,000 people, based on the 2020 census. The main city and county seat is Allentown. This is Pennsylvania's third-largest city.

Lehigh County is part of the Lehigh Valley region. This area also includes Northampton County. Together, they form Pennsylvania's third-largest metropolitan area. Lehigh County is growing fast and has more people than Northampton County. Both counties are part of the Philadelphia television market. This is the fourth-largest TV market in the United States.

The county gets its name from the Lehigh River. This river is about 109 miles (175 km) long. It flows into the Delaware River. Long ago, during the Industrial Revolution, the Lehigh River was very important. It helped transport coal, iron, and steel products. This helped the country grow a lot.

Lehigh County is located between two mountain ranges. These are part of the Appalachian Mountains. Blue Mountain is to the north. South Mountain is to the south. The county shares borders with several other counties. These include Montgomery, Bucks, Northampton, Carbon, Schuylkill, and Berks counties. It is about 64 miles (103 km) northwest of Philadelphia. It is also about 93 miles (150 km) west of New York City.

History of Lehigh County

How Lehigh County Started

Shelter House Emmaus PA 2
Shelter House in Emmaus, built in 1734. It is one of the oldest buildings in Pennsylvania that people still use today.
2021 - Monument - Looking West - Allentown PA
The Soldiers and Sailors Monument in Allentown. It honors soldiers from the area who fought in the American Civil War.

Lehigh County was first settled around 1730. It became its own county in 1812. Before that, it was part of Northampton County. The county is named after the Lehigh River. The river's name comes from a Lenape Indian word. It means "where there are forks."

One of the oldest buildings in the area is the Shelter House. It was built in Emmaus in 1734. German settlers built it. It is still used today.

The American Revolution

Lehigh County played a part in the American Revolutionary War. People here started to resist British rule early on. In 1774, they formed a "Committee of Observations." This group helped organize local patriots.

After the Declaration of Independence, local militias pushed out people who supported the British. The colonial government in the area began to fall apart.

A famous event happened in 1777. After a battle, Philadelphia was in danger. The government ordered important bells from Philadelphia to be moved. This included the Liberty Bell. They were hidden in the basement of Zion Reformed Church in Allentown. This kept them safe from the British Army.

The Industrial Revolution

The opening of the Lehigh Canal in 1827 changed Allentown and Lehigh County a lot. It helped the area grow from farms to factories. The canal made it easier to transport goods. Lehigh County became a major center for heavy industry. It was an important part of the Industrial Revolution.

The American Civil War

When the American Civil War began in 1861, people from Allentown volunteered. They formed a unit called the Allen Infantry. Many people from Lehigh County joined the Union Army. About 70% of the 47th Pennsylvania Infantry Regiment came from here.

In 1899, the Soldiers and Sailors Monument was built in Allentown. It honors the men from Lehigh County who fought and died to save the Union.

Geography and Climate

2017 - Hamilton Street Christmas Skyline - Allentown PA
The city skyline of Allentown, Lehigh County's largest city, at Christmas.
Allentown viewed from Egypt
South Mountain, part of the Appalachian Mountain range in Lehigh County, with Allentown in the foreground.
Watercourse
The Lehigh River in Lehigh County. It is a major river in the area.

Lehigh County covers about 348 square miles (901 square km). Most of this is land. Only a small part is water.

Mountains and Rivers

Lehigh County is surrounded by two mountain ridges. To the north is Blue Mountain. It is about 1,300 to 1,604 feet (396 to 489 meters) high. To the south is South Mountain. It is about 700 to 1,100 feet (213 to 335 meters) high. The highest point in Lehigh County is near Germansville. It is called Bake Oven Knob.

Most of the county's water flows into the Lehigh River. The Lehigh River then flows into the Delaware River. Some southern parts of the county also drain into the Schuylkill River.

Neighboring Counties

Lehigh County borders these other counties:

Weather in Lehigh County

Lehigh County has a humid continental climate. This means it has four distinct seasons. Summers are usually hot and humid. Fall and spring are mild. Winters are cold. Rain and snow are spread out throughout the year.

In Allentown, January is the coldest month. Temperatures average around 30.1°F (-1.1°C). July is the warmest month. Temperatures average around 75.6°F (24.2°C). The county gets about 33 inches (84 cm) of snow each year. January and February get the most snow. The average rainfall is about 47 inches (120 cm) per year.

Climate data for Allentown, Pennsylvania (Lehigh Valley International Airport) 1991-2020 normals (Records x-2021)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 72
(22)
81
(27)
87
(31)
93
(34)
97
(36)
100
(38)
105
(41)
100
(38)
99
(37)
93
(34)
81
(27)
72
(22)
105
(41)
Mean daily maximum °F (°C) 38.4
(3.6)
41.6
(5.3)
50.8
(10.4)
63.4
(17.4)
73.5
(23.1)
81.9
(27.7)
86.4
(30.2)
84.3
(29.1)
77.4
(25.2)
65.5
(18.6)
53.8
(12.1)
43.1
(6.2)
63.3
(17.4)
Daily mean °F (°C) 30.1
(−1.1)
32.4
(0.2)
40.7
(4.8)
51.8
(11.0)
62.0
(16.7)
70.9
(21.6)
75.6
(24.2)
73.6
(23.1)
66.3
(19.1)
54.6
(12.6)
43.9
(6.6)
35.0
(1.7)
53.1
(11.7)
Mean daily minimum °F (°C) 21.8
(−5.7)
23.2
(−4.9)
30.5
(−0.8)
40.3
(4.6)
50.6
(10.3)
59.9
(15.5)
64.7
(18.2)
62.8
(17.1)
55.2
(12.9)
43.8
(6.6)
34.1
(1.2)
26.8
(−2.9)
42.8
(6.0)
Record low °F (°C) −15
(−26)
−12
(−24)
−5
(−21)
12
(−11)
28
(−2)
39
(4)
46
(8)
41
(5)
30
(−1)
21
(−6)
3
(−16)
−8
(−22)
−15
(−26)
Average precipitation inches (mm) 3.30
(84)
2.77
(70)
3.63
(92)
3.67
(93)
3.65
(93)
4.40
(112)
5.30
(135)
4.56
(116)
4.84
(123)
4.14
(105)
3.24
(82)
3.86
(98)
47.36
(1,203)
Average snowfall inches (cm) 9.8
(25)
10.8
(27)
6.3
(16)
0.5
(1.3)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.2
(0.51)
0.9
(2.3)
4.6
(12)
33.1
(84)
Average precipitation days (≥ 0.01 in) 11 10 11 12 12 11 11 10 10 10 9 12 129
Average snowy days (≥ 0.1 in) 5 4 3 0 0 0 0 0 0 0 1 3 16
Source: NOAA

People of Lehigh County

Historical population
Census Pop.
1820 18,895
1830 22,256 17.8%
1840 25,787 15.9%
1850 32,479 26.0%
1860 43,753 34.7%
1870 56,796 29.8%
1880 65,969 16.2%
1890 76,631 16.2%
1900 93,893 22.5%
1910 118,832 26.6%
1920 148,101 24.6%
1930 172,893 16.7%
1940 177,533 2.7%
1950 198,207 11.6%
1960 227,536 14.8%
1970 255,304 12.2%
1980 272,349 6.7%
1990 291,130 6.9%
2000 312,090 7.2%
2010 349,497 12.0%
2020 374,557 7.2%
U.S. Decennial Census
1790-1960 1900-1990
1990-2000 2010-2019

In 2020, Lehigh County had 374,557 people. This was a 7.2% increase since 2010. The county is one of the fastest-growing in Pennsylvania.

The population is made up of different groups. About 60.8% are White. About 26% are Hispanic or Latino. About 6.12% are Black or African American. About 3.66% are Asian. Other groups make up the rest.

Education in Lehigh County

Baum School of Art, Allentown PA
Baum School of Art in Allentown.
Cedar Crest College (6)
Cedar Crest College in Allentown.
Muhlenberg College 04
Muhlenberg College in Allentown.
William Allen High School, Allentown PA
Allen High School, one of Allentown's public high schools.
Salisbury High School, LehighCo PA
Salisbury High School in Salisbury Township.

Lehigh County has many schools and colleges. Students can choose from different types of education.

Colleges and Universities

  • Cedar Crest College in Allentown
  • DeSales University in Center Valley
  • Muhlenberg College in Allentown
  • Penn State Lehigh Valley in Center Valley

Two-Year Colleges and Technical Schools

  • Baum School of Art in Allentown
  • Lehigh Carbon Community College in Schnecksville (main campus) and Allentown (satellite campus)
  • Lincoln Tech in Allentown

Public School Districts

Here are some of the public school districts in Lehigh County:

  • Allentown School District (includes William Allen High School and Louis E. Dieruff High School)
  • Bethlehem Area School District
  • Catasauqua Area School District (includes Catasauqua High School)
  • East Penn School District (includes Emmaus High School)
  • Northern Lehigh School District (includes Northern Lehigh High School)
  • Northwestern Lehigh School District
  • Parkland School District (includes Parkland High School)
  • Salisbury Township School District (includes Salisbury High School)
  • Southern Lehigh School District (includes Southern Lehigh High School)
  • Whitehall-Coplay School District (includes Whitehall High School)

Other Schools

  • Public Charter Schools: Lincoln Leadership Academy Charter School and Roberto Clemente Charter School in Allentown.
  • Private High Schools: Allentown Central Catholic High School in Allentown and Salem Christian School in Macungie.
  • Vocational High School: Lehigh Career and Technical Institute in Schnecksville.

Getting Around Lehigh County

Air Travel

ABE terminal (2)
Lehigh Valley International Airport, Pennsylvania's fourth-busiest airport.

Lehigh County has two airports. Lehigh Valley International Airport (ABE) is the main airport for commercial flights. It is in Hanover Township. There is also Allentown Queen City Municipal Airport. This airport is mostly for private planes.

Bus Service

Public bus service is provided by LANta. You can also take private bus lines. These buses go from Allentown to places like New York City, Philadelphia, and Atlantic City.

Major Roads

2022-09-23 11 09 58 View east along Interstate 78 and south along Pennsylvania State Route 309 from the overpass for Rock Road in Upper Saucon Township, Lehigh County, Pennsylvania
The merger of I-78 East and PA Route 309 South in Lehigh County.

Many important highways run through Lehigh County:

  • I-78
  • I-476 / Penna Turnpike NE Extension
  • US 22
  • US 222
  • PA 29
  • PA 100
  • PA 143
  • PA 145
  • PA 222
  • PA 309
  • PA 329
  • PA 378
  • PA 863
  • PA 873
  • PA 987
  • Cedar Crest Boulevard
  • Lehigh Street
  • Tilghman Street

Media and Communication

Newspapers

You can read about Lehigh County in these newspapers: The Morning Call (Allentown), The Express-Times (Easton), and The Times News (Lehighton).

Radio and Television

Lehigh County has its own radio stations. Some major stations from New York City and Philadelphia can also be heard.

For television, Lehigh County is part of the Philadelphia TV market. This is one of the biggest in the country. Three TV stations are based in the county: WBPH-TV Channel 60, WLVT Channel 39 (PBS), and WFMZ Channel 69 (an independent station). You can also watch major network channels from Philadelphia, New York City, and Scranton-Wilkes-Barre.


Phone Service

Lehigh County uses several phone area codes. These include 610 and 484. A new area code, 835, might be added in the future.

Fun Things to Do in Lehigh County

Dorney Park Steel Force Thunderhawk
Dorney Park & Wildwater Kingdom's Steel Force and Thunderhawk roller coasters. Steel Force is very tall and fast!
Cokepark allentown
Coca-Cola Park in Allentown, home of the Lehigh Valley IronPigs baseball team.
XMAS AT LEHIGH COUNTY ZOO
Christmas lights at Lehigh Valley Zoo in Schnecksville.

Lehigh County offers many fun activities and places to visit.

Amusement Parks

Dorney Park & Wildwater Kingdom is a large amusement and water park. It is located in South Whitehall Township. It is open from May to October.

Fairs and Festivals

The Great Allentown Fair is a huge annual fair. It takes place at the Allentown Fairgrounds in late August and early September. The Mayfair Festival of the Arts is another yearly event. It celebrates art and is held at Cedar Crest College in May.

Golf Courses

If you like golf, Lehigh County has many courses. Some popular ones include Brookside Country Club, Lehigh Country Club, and Saucon Valley Country Club.

Museums and History

The county has several interesting museums:

Parks and Zoo

Lehigh County has many public parks.

Communities in Lehigh County

2007 - Nineteenth Street Theatre District
Young people gather on 19th Street in Allentown.
Emmaus Theater 4th Street Lehigh Co PA
The historic Emmaus Theatre in Emmaus.
Bear-creek-lodge
Bear Creek Mountain Resort in Longswamp Township.
George Taylor House
The George Taylor House in Catasauqua. George Taylor signed the Declaration of Independence.
Lynn Township farm
A farm in Lynn Township in Lehigh County.

Lehigh County has different types of towns and areas. These include cities, boroughs, and townships.

Cities

Boroughs

Townships

  • Hanover Township
  • Heidelberg Township
  • Lower Macungie Township
  • Lower Milford Township
  • Lowhill Township
  • Lynn Township
  • North Whitehall Township
  • Salisbury Township
  • South Whitehall Township
  • Upper Macungie Township
  • Upper Milford Township
  • Upper Saucon Township
  • Washington Township
  • Weisenberg Township
  • Whitehall Township

Census-Designated Places (CDPs)

These are areas the U.S. Census Bureau uses for data. They are not official towns under Pennsylvania law.

Other Communities

These are smaller, unincorporated communities.

Largest Communities by Population

Here are the largest cities, townships, boroughs, and CDPs in Lehigh County, based on the 2020 Census:

county seat

Rank City/Town/etc. Municipal type Population (2020 Census)
1 Allentown City 125,845
2 Bethlehem (mostly in Northampton County) City 74,982
4 Emmaus Borough 11,652
5 Ancient Oaks CDP 6,995
6 Catasauqua Borough 6,518
7 Wescosville CDP 6,039
8 Fountain Hill Borough 4,878
9 Dorneyville CDP 4,406
10 Slatington Borough 4,232
11 Breinigsville CDP 4,138
13 Coplay Borough 3,192
14 Macungie Borough 3,074
15 Schnecksville CDP 2,935
17 Coopersburg Borough 2,386
18 Alburtis Borough 2,361
19 Cetronia CDP 2,115
20 Trexlertown CDP 1,988
22 Laurys Station CDP 1,243
24 DeSales University CDP 953
25 New Tripoli CDP 898
26 Slatedale CDP 455

Famous People from Lehigh County

Lehigh County has been home to many well-known people, including:

See also

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