Though growth has slowed considerably, Delaware County is still the fastest-growing county in Ohio and the 20th-fastest-growing county in the nation.

Though growth has slowed considerably, Delaware County is still the fastest-growing county in Ohio and the 20th-fastest-growing county in the nation.

Delaware County Regional Planning Commission released its annual demographic information report in October.

The report reflects estimates for the demographics of the county as of July 2009.

The report includes adjusted numbers from the U.S. Census Bureau based on the 2000 census data, the bureau's 2009 American Community Survey and building permits for new residential development issued in the county.

In July 2009, the bureau estimated Delaware County's population at 168,708. The 2000 census population was 109,989. The population increased by 7,913 from 2001 to 2002. From 2008 to 2009, the increase was 3,795.

The poor economy contributed to slowing growth in the county, said RPC executive director Scott Sanders.

"That's why we saw the drop off. I'm surprised people are even building houses, but every month we seem to have at least a double-digit number of (new residential) building permits. It's a big county, so you're always going to have some activity," Sanders said.

In 2009, 622 building permits were issued in the county. The report shows the permits decreasing annually since 2004 when 3,411 permits were issued.

The report includes population estimates calculated by the RPC.

Sanders said his office uses data that is slightly different than the Census Bureau's.

It includes the number of new residential building permits in the county.

The RPC estimates the county population as of July 2009 to be 166,040, slightly lower than that calculated by the Census Bureau.

He said when the 2010 census numbers are published, he'll find out whether his numbers are more accurate.

Of the 59,901 households in the county, 44 percent have elementary-age children.

Of the 108,899 people ages 25 or older, 95 percent have graduated from high school and 48 percent have a bachelor's degree.

The average household income is $103,382.

The average owner-occupied residence is valued at $253,900, and 63 percent of the housing units in the county have been built since 1990.

The RPC projects continued growth in the county, estimating by 2020 the county population will be 209,052.

The report also anticipates that the county will "continue to increase by domestic migration from Franklin County."

The full 2010 county demographic report is available at www.dcrpc.org.