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Hillsboro, Missouri facts for kids

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Hillsboro, Missouri
Jefferson County Courthouse in Hillsboro
Jefferson County Courthouse in Hillsboro
Nickname(s): 
The Boro
Location of Hillsboro, Missouri
Location of Hillsboro, Missouri
Country United States
State Missouri
County Jefferson
Incorporated 1839
Area
 • Total 3.84 sq mi (9.95 km2)
 • Land 3.84 sq mi (9.95 km2)
 • Water 0.00 sq mi (0.00 km2)
Elevation
771 ft (235 m)
Population
 (2020)
 • Total 3,473
 • Density 903.96/sq mi (348.98/km2)
Time zone UTC-6 (Central (CST))
 • Summer (DST) UTC-5 (CDT)
ZIP code
63050
Area code(s) 636
FIPS code 29-32248
GNIS feature ID 2394388
Website hillsboromo.org

Hillsboro is a city in Missouri, United States. It is also the county seat of Jefferson County. This means it's where the main government offices for the county are located. In 2020, about 3,473 people lived in Hillsboro. This was an increase from 2,821 people in 2010.

History of Hillsboro

Missouri - Big Spring State Part through Hillsboro - NARA - 23941771 (cropped)
Hillsboro in 1933

Hillsboro was first called Monticello. It was officially planned out in 1839. The name Monticello came from the home of President Thomas Jefferson.

Later, the name Monticello had to be changed. This was because the U.S. postal service already had another post office in Missouri with a very similar name. So, they changed it to Hillsboro. This new name is the English version of the Italian word "Monticello." A post office has been open in Hillsboro since 1838.

Two important places in Hillsboro are listed on the National Register of Historic Places. These are the Thomas C. Fletcher House and the Sandy Creek Covered Bridge.

Geography of Hillsboro

Hillsboro is located in the state of Missouri. The city covers a total area of about 3.65 square miles (9.45 square kilometers). All of this area is land, with no large bodies of water inside the city limits.

Population and People

The number of people living in Hillsboro has changed over many years. Here's how the population has grown:

Historical population
Census Pop.
1890 264
1900 254 −3.8%
1910 261 2.8%
1920 205 −21.5%
1930 233 13.7%
1940 256 9.9%
1950 390 52.3%
1960 457 17.2%
1970 831 81.8%
1980 1,508 81.5%
1990 1,625 7.8%
2000 1,675 3.1%
2010 2,821 68.4%
2020 3,473 23.1%
U.S. Decennial Census

What the 2010 Census Showed

In 2010, there were 2,821 people living in Hillsboro. These people lived in 900 different homes. About 623 of these were families.

The city had about 773 people per square mile (298 people per square kilometer). Most of the people living in Hillsboro were White (94.5%). Other groups included African American (2.8%), Native American (0.4%), and Asian (0.5%). Some people were from other races (0.5%) or from two or more races (1.3%). About 2.0% of the population was Hispanic or Latino.

Many homes (44.2%) had children under 18 living there. About 48.3% of homes were married couples. The average home had about 2.69 people. The average family had about 3.23 people.

The average age of people in Hillsboro was 29.2 years old. About 27.9% of residents were under 18. Also, 8.2% of people were 65 years old or older.

Education in Hillsboro

Hillsboro is home to the main campus of Jefferson College. This is a two-year college that serves the entire Jefferson County area. Students can earn associate degrees here.

The local school system is called the Hillsboro R-3 School District. The city has one high school, which is Hillsboro High School.

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