Polk County, Missouri
Demographics
As of the census of 2000, there were 26,992 people, 9,917 households, and 7,140 families residing in the county. The population density was 42 people per square mile (16/km²).

Polk County, Missouri

Section Title: Demographics
Table Section Text: As of the census of 2000, there were 26,992 people, 9,917 households, and 7,140 families residing in the county. The population density was 42 people per square mile (16/km²).

Historical population

Census	Pop.	%±

1840	8,449	—

1850	6,186	−26.8%

1860	9,995	61.6%

1870	12,445	24.5%

1880	15,734	26.4%

1890	20,339	29.3%

1900	23,255	14.3%

1910	21,561	−7.3%

1920	20,351	−5.6%

1930	17,803	−12.5%

1940	17,400	−2.3%

1950	16,062	−7.7%

1960	13,753	−14.4%

1970	15,415	12.1%

1980	18,822	22.1%

1990	21,826	16.0%

2000	26,992	23.7%

2010	31,137	15.4%

Est. 2016	31,285	0.5%

U.S. Decennial Census 1790-1960 1900-1990 1990-2000 2010-2015

Sentence(s)

As of the 2010 census, the population was 31,137.

final_sentence: As of the 2010 census, the population was 31,137.