Smithfield is a town in Johnston County, North Carolina, United States. In 2010, the estimated population was 12,965. It is the county seat of Johnston County. The city is home to the Ava Gardner Museum and is situated along the Neuse River, where visitors enjoy the annual Smithfield Ham & Yam Festival, walks along the Buffalo Creek Greenway and the historic downtown district. The town is located in North Carolina's famed Research Triangle and is approximately 29 miles southeast of downtown Raleigh. The Raleigh-Durham-Cary Combined Statistical area has a population of over 2 million residents.
There were 4,417 households out of which 26.6% had children under the age of 18 living with them, 42.1% were married couples living together, 14.9% had a female householder with no husband present, and 39.4% were non-families. 35.7% of all households were made up of individuals and 16.3% had someone living alone who was 65 years of age or older. The average household size was 2.30 and the average family size was 2.97.
In the town the population was spread out with 21.3% under the age of 18, 8.3% from 18 to 24, 29.2% from 25 to 44, 22.9% from 45 to 64, and 18.2% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 99.4 males. For every 100 females age 18 and over, there were 97.6 males. The median income for a household in the town was $27,813, and the median income for a family was $37,929. Males had a median income of $29,567 versus $24,440 for females. The per capita income for the town was $18,012. About 14.5% of families and 20.6% of the population were below the poverty line, including 27.1% of those under age 18 and 19.2% of those age 65 or over.