Smithfield is a city located in Johnston County North Carolina. With a 2020 population of 13,587, it is the 73rd largest city in North Carolina and the 2474th largest city in the United States . Smithfield is currently growing at a rate of 2.27% annually and its population has increased by 23.90% since the most recent census, which recorded a population of 10,966 in 2010. Smithfield reached it's highest population of 13,587 in 2021. Spanning over 12 miles, Smithfield has a population density of 1,140 people per square mile.
The average household income in Smithfield is $54,980 with a poverty rate of 22.12%. The median rental costs in recent years comes to $688 per month, and the median house value is $142,200. The median age in Smithfield is 44.9 years, 44.4 years for males, and 45.3 years for females.