As of the third quarter of 2025, the median home value in Buffalo County was $264,186. As of the 2024
American Community Survey, there are 19,984 estimated households in Buffalo County with an average of 2.42 persons per household. The county has a median household income of $75,911. Approximately 9.9% of the county's population lives at or below the
poverty line. Buffalo County has an estimated 68.7% employment rate, with 34.4% of the population holding a bachelor's degree or higher and 93.8% holding a high school diploma. The
population density was . There were 20,947 housing units at an average density of . The racial makeup of the county was 86.58%
White, 1.28%
African American, 0.55%
Native American, 1.34%
Asian, 0.07%
Pacific Islander, 4.34% from some other races and 5.84% from two or more races.
Hispanic or Latino people of any race were 10.11% of the population. The median age was 34.6 years. 24.1% of residents were under the age of 18 and 15.9% of residents were 65 years of age or older. For every 100 females there were 97.7 males, and for every 100 females age 18 and over there were 94.7 males age 18 and over. 68.9% of residents lived in urban areas, while 31.1% lived in rural areas. There were 19,590 households in the county, of which 30.4% had children under the age of 18 living with them and 25.2% had a female householder with no spouse or partner present. About 29.6% of all households were made up of individuals and 10.7% had someone living alone who was 65 years of age or older. There were 20,947 housing units, of which 6.5% were vacant. Among occupied housing units, 63.0% were owner-occupied and 37.0% were renter-occupied. The homeowner vacancy rate was 1.1% and the rental vacancy rate was 7.3%.
2010 census As of the
2010 census, there were 46,102 people, 18,037 households, and 11,425 families residing in the county. The population density was . There were 19,064 housing units at an average density of . The racial makeup of the county was 92.72%
White, 0.83%
African American, 0.28%
Native American, 1.29%
Asian, 0.03%
Pacific Islander, 3.50% from some other races and 1.35% from two or more races.
Hispanic or Latino people of any race were 7.44% of the population.
2000 census As of the
2000 census, there were 42,259 people, 15,930 households, and 10,227 families residing in the county. The population density was . There were 16,830 housing units at an average density of . The racial makeup of the county was 95.18%
White, 0.55%
African American, 0.33%
Native American, 0.68%
Asian, 0.03%
Pacific Islander, 2.20% from some other races and 1.03% from two or more races.
Hispanic or Latino people of any race were 4.66% of the population. 42.5% were of
German, 8.1%
Irish, 7.8%
English, 6.8%
American and 5.3%
Swedish ancestry. There were 15,930 households, out of which 32.70% had children under the age of 18 living with them, 52.90% were
married couples living together, 8.30% had a female householder with no husband present, and 35.80% were non-families. 26.10% of all households were made up of individuals, and 9.60% had someone living alone who was 65 years of age or older. The average household size was 2.48 and the average family size was 3.02. The county population contained 25.00% under the age of 18, 17.80% from 18 to 24, 26.60% from 25 to 44, 19.00% from 45 to 64, and 11.50% who were 65 years of age or older. The median age was 30 years. For every 100 females, there were 96.00 males. For every 100 females age 18 and over, there were 92.40 males. The median income for a household in the county was $36,782, and the median income for a family was $46,247. Males had a median income of $30,182 versus $21,977 for females. The
per capita income for the county was $17,510. About 6.30% of families and 11.20% of the population were below the
poverty line, including 10.50% of those under age 18 and 8.50% of those age 65 or over. ==Communities==