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Carlyle, Illinois
Clinton County Courthouse, Carlyle
Clinton County Courthouse, Carlyle
Location of Carlyle in Clinton County, Illinois.
Location of Carlyle in Clinton County, Illinois.
Location of Illinois in the United States
Location of Illinois in the United States
Country United States
State Illinois
County Clinton
Settled 1811 (1811)
Incorporated (town) February 10, 1837
Incorporated (city) April 17, 1884
Area
 • Total 3.43 sq mi (8.87 km2)
 • Land 3.42 sq mi (8.87 km2)
 • Water 0.00 sq mi (0.00 km2)
Elevation
469 ft (143 m)
Population
 (2020)
 • Total 3,253
 • Density 949.78/sq mi (366.76/km2)
Time zone UTC-6 (CST)
 • Summer (DST) UTC-5 (CDT)
ZIP Code(s)
62231
Area code(s) 618
FIPS code 17-11228
GNIS feature ID 2393749
Public Transit South Central Transit

Carlyle is a city in Clinton County, Illinois, United States. It is also the county seat, which means it's where the main government offices for the county are located. In 2020, about 3,253 people lived there.

Carlyle is located about 50 miles (80 km) east of St. Louis, Missouri. It's famous for Carlyle Lake, which is the biggest lake in Illinois made by people. The city is also home to the General Dean Suspension Bridge, a special bridge that crosses the Kaskaskia River. It's the only bridge of its kind in Illinois!

History of Carlyle

Early Settlement and First Businesses

Around 1811 or 1812, a man named John Hill built one of the first houses in what would become Carlyle. These houses were sometimes called "block" houses and were built to help protect settlers. John Hill also started Carlyle's first business: a ferry service to carry people and goods across the Kaskaskia River. A ferry is like a boat that transports things over water. He even had a small building by the river to collect tolls.

In 1816, Charles Slade and his two brothers arrived and bought John Hill's land and ferry business. Charles Slade also partnered with a man named Hubbard to open the first store in Carlyle in 1817. In 1818, the town lots were officially planned out. A post office was set up on March 10, 1819, but it was first called "Carlisle," possibly due to a mistake.

Becoming a County Seat

The area where Carlyle is located was settled before Illinois became a state in 1818. Illinois' first state capital was in Kaskaskia. In 1820, the state decided to move the capital. Carlyle almost became the new capital but lost by just one vote to Vandalia.

In 1824, Clinton County was created from parts of other counties. Charles Slade, who helped found Carlyle, gave 20 acres of his land so that Carlyle could become the county seat. This happened in July 1825. Carlyle was officially started in 1818 by Charles W. Slade, who named it after his grandmother's family. It became an official town on February 10, 1837, and a city on April 17, 1884.

Geography of Carlyle

Carlyle city hall
Carlyle City Hall

Carlyle is located a bit east of the middle of Clinton County. The Kaskaskia River flows through the eastern part of the city. Just northeast of the city is the Carlyle Dam, which holds back the water to form Carlyle Lake. This lake is the biggest lake in Illinois that was made by people.

U.S. Route 50 goes through Carlyle. You can take it east for about 23 miles (37 km) to Salem or west for about 50 miles (80 km) to St. Louis. Illinois Route 127 goes north about 21 miles (34 km) to Greenville and south about 19 miles (31 km) to Nashville, Illinois.

The famous General Dean Suspension Bridge crosses the Kaskaskia River just north of where U.S. Route 50 crosses it now. This bridge was built in 1859 and was named after Major General William F. Dean in 1953.

Carlyle covers a total area of about 3.43 square miles (8.87 square kilometers). Almost all of this area is land.

Climate in Carlyle

Climate data for Carlyle, Illinois (1991–2020 normals, extremes 1939–present)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 73
(23)
77
(25)
85
(29)
90
(32)
97
(36)
107
(42)
113
(45)
106
(41)
105
(41)
95
(35)
85
(29)
74
(23)
113
(45)
Mean maximum °F (°C) 62.0
(16.7)
66.6
(19.2)
75.3
(24.1)
81.6
(27.6)
87.7
(30.9)
93.5
(34.2)
95.4
(35.2)
95.3
(35.2)
91.5
(33.1)
84.9
(29.4)
72.7
(22.6)
62.3
(16.8)
97.3
(36.3)
Mean daily maximum °F (°C) 39.1
(3.9)
44.8
(7.1)
54.8
(12.7)
66.6
(19.2)
75.9
(24.4)
84.8
(29.3)
88.3
(31.3)
87.4
(30.8)
81.0
(27.2)
69.5
(20.8)
55.1
(12.8)
43.3
(6.3)
65.9
(18.8)
Daily mean °F (°C) 30.3
(−0.9)
34.8
(1.6)
44.6
(7.0)
55.7
(13.2)
65.9
(18.8)
74.9
(23.8)
78.2
(25.7)
76.8
(24.9)
69.5
(20.8)
57.9
(14.4)
45.3
(7.4)
34.8
(1.6)
55.7
(13.2)
Mean daily minimum °F (°C) 21.5
(−5.8)
24.9
(−3.9)
34.5
(1.4)
44.8
(7.1)
55.9
(13.3)
64.9
(18.3)
68.1
(20.1)
66.2
(19.0)
58.1
(14.5)
46.3
(7.9)
35.5
(1.9)
26.3
(−3.2)
45.6
(7.6)
Mean minimum °F (°C) 0.5
(−17.5)
7.2
(−13.8)
16.0
(−8.9)
30.3
(−0.9)
41.8
(5.4)
53.0
(11.7)
58.9
(14.9)
56.2
(13.4)
43.7
(6.5)
31.0
(−0.6)
20.1
(−6.6)
9.2
(−12.7)
−2.4
(−19.1)
Record low °F (°C) −22
(−30)
−20
(−29)
−5
(−21)
22
(−6)
30
(−1)
41
(5)
47
(8)
43
(6)
30
(−1)
20
(−7)
0
(−18)
−19
(−28)
−22
(−30)
Average precipitation inches (mm) 3.05
(77)
2.45
(62)
3.67
(93)
4.90
(124)
5.23
(133)
4.87
(124)
4.24
(108)
3.59
(91)
3.65
(93)
3.39
(86)
3.72
(94)
3.10
(79)
45.86
(1,165)
Average precipitation days (≥ 0.01 in) 9.8 9.0 11.0 11.4 12.4 10.6 8.5 8.1 7.7 9.1 9.4 11.0 118.0
Source: NOAA

People of Carlyle (Demographics)

Historical population
Census Pop.
1850 289
1870 1,364
1880 2,017 47.9%
1890 1,784 −11.6%
1900 1,874 5.0%
1910 1,982 5.8%
1920 2,027 2.3%
1930 2,078 2.5%
1940 2,591 24.7%
1950 2,669 3.0%
1960 2,903 8.8%
1970 3,139 8.1%
1980 3,388 7.9%
1990 3,474 2.5%
2000 3,406 −2.0%
2010 3,281 −3.7%
2020 3,253 −0.9%
U.S. Decennial Census

Based on the 2020 census, Carlyle had 3,253 people living in 1,442 households. About 1,041 of these were families. The city has about 949 people per square mile.

  • About 17.7% of the people were under 18 years old.
  • About 16.1% were 65 years old or older.
  • The average age in Carlyle was 36.1 years.

The average income for a household in Carlyle was $54,750 per year. For families, the average income was $67,188 per year.

Notable People from Carlyle

Many interesting people have come from Carlyle:

  • Herman J. C. Beckemeyer: An Illinois state politician, lawyer, and mayor of Carlyle.
  • Sidney Breese: A judge, US Senator, and Illinois Supreme Court justice.
  • William F. Dean: A major general in the US Army who received the Medal of Honor.
  • Elias Smith Dennis: A Union Army general during the Civil War.
  • James Donnewald: A state treasurer.
  • Pat Jarvis: A baseball pitcher for the Atlanta Braves and Montreal Expos.
  • Patsy McGaffigan: A baseball infielder for the Philadelphia Phillies.
  • Edwin P. Ramsey: A United States Army officer.
  • Mel Simons: A baseball outfielder for the Chicago White Sox.
  • Charles Slade: A US marshal and congressman, and one of the founders of Carlyle.
  • Jack Slade: An American frontier figure.

See also

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