St. Charles County, Missouri

St. Charles County is a located in the  of. As of 2000, the population was 283,883. Saint Charles County is part of the. Its is  and St. Charles County is also one of the fastest growing counties in the nation, with a population of 337,572 in 2005. The county was organized in and named for the Spanish district once located here, San Carlos, from.

Geography
The county has a total area of 1,534 (592 ). 1,451 km² (560 sq mi) of it is land and 83 km² (32 sq mi) of it (5.39%) is water.

Adjacent counties

 * (northwest)
 * (north)
 * (northeast)
 * (east)
 * (southeast)
 * (south)
 * (west)

Major Municipalities

 * - 68,000 est.
 * - 66,000 est.
 * - 74,000 est.
 * - 14,000 est.
 * - 23,000 est.

Demographics
As of 2000, there were 283,883 people, 101,663 households, and 77,060 families residing in the county. The was 196/km² (507/sq mi). There were 105,514 housing units at an average density of 73 persons/km² (188 persons/sq mi). The racial makeup of the county was 94.67%, 2.69% , 0.23% , 0.85% , 0.03% , 0.46% from other races, and 1.07% from two or more races. or of any race were 1.47% of the population.

There were 101,663 households out of which 40.50% had children under the age of 18 living with them, 63.20% were living together, 9.20% have a woman whose husband does not live with her, and 24.20% were non-families. 19.40% of all households were made up of individuals and 5.90% had someone living alone who was 65 years of age or older. The average household size was 2.76 and the average family size was 3.18.

In the county the population was spread out with 29.00% under the age of 18, 8.20% from 18 to 24, 32.60% from 25 to 44, 21.60% from 45 to 64, and 8.80% who were 65 years of age or older. The median age was 34 years. For every 100 females there were 97.10 males. For every 100 females age 18 and over, there were 94.10 males.

The median income for a household in the county was $57,258, and the median income for a family was $64,415. Males had a median income of $44,528 versus $29,405 for females. The for the county was $23,592. 4.00% of the population and 2.80% of families were below the poverty line. Out of the total people living in poverty, 4.90% are under the age of 18 and 5.10% are 65 or older.

St. Charles County, with a population of 337,572, has been one of the fastest-growing counties in the country for decades, with 55 percent growth in the 1980s, 33 percent in the 1990s, and another 13 percent between 2000 and 2004. The county features a cross-section of industry, as well as extensive retail and some agriculture. With the Missouri River on the south and the Mississippi on the north and east, the county is bisected east to west by Interstate 70. St. Charles County has two small airports and two ferries that cross the Mississippi River. The City of St. Charles is the county seat.

Cities and Towns
St. Charles County has 21 municipalities: