Onslow County, North Carolina

Onslow County profile, demographic data, and geographic information.

Local Government & Public Administration

Authoritative general-purpose local government units serving this area U.S. Census Bureau GUS (2026) / GMAF

Government Unit	Unit Type	Jurisdiction Role	Contact / Address
COUNTY OF ONSLOW GUS Population: 212,954 (2024) ID: 171109	County	Official County Government	Contact: PLANNING & DEVELOPMENT DIRECTOR 234 NW CORIDOR BLVD, JACKSONVILLE NC 28540
CITY OF JACKSONVILLE GUS Population: 70,840 (2024) ID: 208979	Municipal	Municipal Government Within County	Contact: ASSISTANT FINANCE DIRECTOR PO BOX 128, JACKSONVILLE NC 28541-0128
TOWN OF HOLLY RIDGE GUS Population: 5,766 (2024) ID: 171252	Municipal	Municipal Government Within County	Contact: TOWN CLERK PO BOX 145, HOLLY RIDGE NC 28445-0145
TOWN OF SWANSBORO GUS Population: 4,165 (2024) ID: 131755	Municipal	Municipal Government Within County	Contact: MAYOR 601 W CORBETT AVE, SWANSBORO NC 28584-8451
TOWN OF RICHLANDS GUS Population: 2,446 (2024) ID: 110097	Municipal	Municipal Government Within County	Contact: TOWN ADMINISTRATOR PO BOX 245, RICHLANDS NC 28574-0245
TOWN OF NORTH TOPSAIL BEACH GUS Population: 1,081 (2024) ID: 139456	Municipal	Municipal Government Within County	Contact: MAYOR 2008 LOGGERHEAD CT, N TOPSAIL BEACH NC 28460-9286