Black Hawk County, Iowa

Black Hawk County is a located in the northeastern part of  of. As of 2000, the population was 128,012, making it the fourth largest county in population in the state. The majority of the county's population resides in the Waterloo-Cedar Falls urbanized area. , the, is located approximately 65 miles east of I-35 at the intersection of U.S. Highways 20, 63 and 218. The city of is located approximately eight miles west of Waterloo.

Black Hawk County is one of the three counties that make up the Waterloo-Cedar Falls.

Geography
According to the, the county has a total area of 1,481 (572 ). 1,469 km² (567 sq mi) of it is land and 12 km² (5 sq mi) of it (0.84%) is water.

The roughly divides the  in half from the northwest to the southeast corner. The land is mostly level since much of it is on the river's.

Adjacent counties

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

Demographics
As of the of 2000, there were 128,012 people, 49,683 households, and 31,946 families residing in the county. The was 87/km² (226/sq mi). There were 51,759 housing units at an average density of 35/km² (91/sq mi). The racial makeup of the county was 88.42%, 7.95% or , 0.18% , 0.98% , 0.04% , 0.93% from , and 1.49% from two or more races. 1.84% of the population were or  of any race.

There were 49,683 households out of which 29.50% had children under the age of 18 living with them, 50.20% were living together, 10.80% had a female householder with no husband present, and 35.70% were non-families. 27.10% of all households were made up of individuals and 10.90% had someone living alone who was 65 years of age or older. The average household size was 2.45 and the average family size was 2.97.

In the county the population was spread out with 23.10% under the age of 18, 15.70% from 18 to 24, 25.20% from 25 to 44, 22.00% from 45 to 64, and 14.00% who were 65 years of age or older. The median age was 34 years. For every 100 females there were 92.30 males. For every 100 females age 18 and over, there were 88.80 males.

The median income for a household in the county was $37,266, and the median income for a family was $47,398. Males had a median income of $33,138 versus $23,394 for females. The for the county was $18,885. About 7.90% of families and 13.10% of the population were below the, including 14.40% of those under age 18 and 8.90% of those age 65 or over.