Geography
According to the U.S. Census Bureau, the county has a total area of 2,369 square miles (6,140 km2), of which 2,364 square miles (6,120 km2) is land and 4.3 square miles (11 km2) (0.2%) is water. [3]
The point where the Arikaree River flows out of Yuma County and into Cheyenne County, Kansas is the lowest point in the State of Colorado at 1,010 meters (3,310 feet) elevation. This crossing point is the highest low point of any U.S. state. [4]
Demographics
Historical population| Census | Pop. | Note | %± |
|---|
| 1890 | 2,596 | | — |
|---|
| 1900 | 1,729 | | −33.4% |
|---|
| 1910 | 8,499 | | 391.6% |
|---|
| 1920 | 13,897 | | 63.5% |
|---|
| 1930 | 13,613 | | −2.0% |
|---|
| 1940 | 12,102 | | −11.1% |
|---|
| 1950 | 10,827 | | −10.5% |
|---|
| 1960 | 8,912 | | −17.7% |
|---|
| 1970 | 8,544 | | −4.1% |
|---|
| 1980 | 9,682 | | 13.3% |
|---|
| 1990 | 8,954 | | −7.5% |
|---|
| 2000 | 9,841 | | 9.9% |
|---|
| 2010 | 10,043 | | 2.1% |
|---|
| 2020 | 9,988 | | −0.5% |
|---|
| 2023 (est.) | 9,862 | [5] | −1.3% |
|---|
|
At the 2000 census there were 9,841 people, 3,800 households, and 2,644 families living in the county. The population density was 4 people per square mile (1.5 people/km2). There were 4,295 housing units at an average density of 2 units per square mile (0.77 units/km2). The racial makeup of the county was 94.17% White, 0.11% Black or African American, 0.28% Native American, 0.07% Asian, 0.02% Pacific Islander, 4.14% from other races, and 1.21% from two or more races. 12.88% of the population were Hispanic or Latino of any race. [10] Of the 3,800 households 33.30% had children under the age of 18 living with them, 59.60% were married couples living together, 6.80% had a female householder with no husband present, and 30.40% were non-families. 27.40% of households were one person and 13.30% were one person aged 65 or older. The average household size was 2.55 and the average family size was 3.13.
The age distribution was 28.30% under the age of 18, 7.10% from 18 to 24, 26.00% from 25 to 44, 22.30% from 45 to 64, and 16.30% 65 or older. The median age was 37 years. For every 100 females there were 96.80 males. For every 100 females age 18 and over, there were 94.90 males.
The median household income was $33,169 and the median family income was $39,814. Males had a median income of $26,124 versus $18,578 for females. The per capita income for the county was $16,005. About 8.80% of families and 12.90% of the population were below the poverty line, including 15.50% of those under age 18 and 10.70% of those age 65 or over.
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United States
Colorado 
