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The city has a total area of 11.85 square miles, including 11.83 of land and 0.02 of water. Most of it sits on an elevated plateau that divides the watersheds of the Gasconade River (a tributary of the [[Missouri River]]) to the west and northwest and the Meramec River (a direct tributary of the [[Mississippi River]]) to the east. It has an average elevation of 1,122 feet, the land generally sloping downward toward the south.<ref>https://web.archive.org/web/20120702145235/http://www.census.gov/geo/www/gazetteer/files/Gaz_places_national.txt</ref>
The city has a total area of 11.85 square miles, including 11.83 of land and 0.02 of water. Most of it sits on an elevated plateau that divides the watersheds of the Gasconade River (a tributary of the [[Missouri River]]) to the west and northwest and the Meramec River (a direct tributary of the [[Mississippi River]]) to the east. It has an average elevation of 1,122 feet, the land generally sloping downward toward the south.<ref>https://web.archive.org/web/20120702145235/http://www.census.gov/geo/www/gazetteer/files/Gaz_places_national.txt</ref>
==Demographics==
At the 2010 census, Rolla had a total of 19,559 inhabitants, grouped into 7,574 households, with a population density of 1,653.3 people per square mile. This figure represented a significant increase from the 2000 census, when Rolla had a population of 16,367. 86.71% of the inhabitants were White, 4.11% were African-American, 0.43% were Native American, 5.70% were Asian, 0.09% were Native Hawaiian or Pacific Islander, 0.41% were from some other race, and 2.56% were from two or more races. Hispanics were 2.62% of the population.
The median age in Rolla was 26.2 years, with 18.2% of inhabitants under the age of 18, 29.4% between 18 and 24 years old, 23.7% between 25 and 44, 17.1% between 45 and 64, and 11.6% 65 years old or older. The sex ratio was 55.0% male, 45.0% female.<ref>http://censusviewer.com/city/MO/Rolla</ref>
According to the 2018 American Community Survey, Rolla had a median household income of $34,934, and a median family income of $53,316. The unemployment rate was 5.4%. The per capita income was $20,753. About 31.1% of the population lived below the poverty line, including 28.9% of people under the age of 18 and 12.7% of people 65 years old or older.<ref>https://data.census.gov/cedsci/table?g=0400000US29_1600000US2962912&d=ACS%205-Year%20Estimates%20Data%20Profiles&tid=ACSDP5Y2018.DP03</ref>
==References==
==References==
[[Category:Missouri Cities and Towns]]
[[Category:Missouri Cities and Towns]]