Onslow County Genealogy
- Formed 1734
- Parent county / earlier New Hanover
- County seat Jacksonville
- Neighbors Pender, Duplin, Jones, Carteret, New Hanover
Photos & maps
What’s new
- Deepened hub: Coastal plain military-town density with older sound-and-farm neighborhoods underneath.
- Formation 1734 from New Hanover — for pre-formation events, use the parent jurisdiction’s paper (not later Anson-only catalogs).
- Seat: Jacksonville · Neighbors: Pender, Duplin, Jones, Carteret, New Hanover.
- Long-form topics: research path, parents/formation, neighbors, places, record stack.
- Tools: checklist · this week in Onslow history.
Onslow County was formed in 1734 from New Hanover. The county seat is Jacksonville. Neighboring counties include Pender, Duplin, Jones, Carteret, New Hanover.
This hub combines a modern research floor—record matrix, towns, repositories, news—with local history narrative. For events before the county’s formation year, open the parent jurisdiction that owned that year—not a later statewide vital series or Anson-only catalog.
Onslow County is a county located in the U.S. state of North Carolina. It is included in the Jacksonville, North Carolina, Metropolitan Statistical Area. As of 2006, the population was 150,673. Its county seat is Jacksonville.
European and English settlers arrived here in 1713 in what was originally part of the colonial precincts of Carteret and New Hanover. Onslow County was formed in 1734 and was named for the Honorable Arthur Onslow, Speaker of the British House of Commons. After a lethal 1752 hurricane, the county courthouse was relocated from Town Point to Wantland’s Ferry; this settlement was eventually incorporated in 1842 and named Jacksonville after President Andrew Jackson. Largely a collection of sparsely populated agrarian and maritime communities, Onslow County dramatically changed in the early 1940s with the establishment of the United States Army Camp Davis near Holly Ridge (now defunct), and the creation of Camp Lejeune in 1941.
Onslow County’s flat, rolling terrain covers 767 square miles (1,990 km2) and is located in the southeastern coastal plain of North Carolina, approximately 120 miles (190 km) east of Raleigh and 50 miles (80 km) north of Wilmington. The city of Jacksonville is the county seat, and the areas surrounding the city constitute the major population centers and growth areas in the county. The county is home to more than 150,000 people and includes the incorporated towns of Holly Ridge, Richlands, Swansboro, North Topsail Beach, part of Surf City, and unincorporated Sneads Ferry. Approximately 156,000 acres (630 km2) comprise the U.S. Marine Corps Base, Camp Lejeune and more than 43,000 marines and sailors are stationed there.
The structure of local government in Onslow County was established in the late 19th century and consists of a five-member Board of Commissioners, elected at large for four-year terms. The Board establishes policies and ordinances implemented by the County Manager and his staff.
Source: Wikipedia
In-depth topics
Towns & communities
History notes
Onslow County (formed 1734 from New Hanover; seat Jacksonville) is a research problem defined by Coastal plain military-town density with older sound-and-farm neighborhoods underneath. Modern labels help late sources and mislead when the event year sat in a parent courthouse.
Jurisdiction first. Write person + event + year + place as written in a source, then open the jurisdiction that owned that year. Before 1734, expect parent paper—not an Onslow-only catalog search.
Place density differs. Jacksonville and market towns generate directories, newspapers, and church clusters that rural neighborhoods do not. Treat Jacksonville, Swansboro, Richlands, Holly Ridge, Sneads Ferry as separate paper systems sharing a courthouse label.
FAN clubs spill. Neighbor research regularly includes Pender, Duplin, Jones, Carteret, New Hanover. Abstract adjoining owners, witnesses, bondsmen, and three neighboring census households before you declare a negative search.
Special Onslow trap: Camp Lejeune-era directories vs colonial/early republic farm paper; New Hanover parent. Keep a one-page formation log (event year → jurisdiction tried → repository → result → next action).
Session order: (1) fix jurisdiction; (2) rebuild every federal census decade; (3) land + probate with full witness abstracting; (4) church/cemetery/newspaper; (5) military and institutional series; (6) paid databases last. Methods: Start here · Master guide · Counties & formation.
Record availability matrix
| Record type | Coverage | Years (approx.) | Notes |
|---|---|---|---|
| Federal census | good | 1790–1950 | Federal schedules after formation with coastal boundary awareness. Parent New Hanover only for pre-formation events. |
| Birth records | sparse | 1913– | Late civil; church substitutes earlier. Base-era directories are late only. |
| Marriage records | partial | 1741– | County series after formation; earlier parent/church. Confirm event-year geography. |
| Death records | partial | 1913– | Certificates denser after statewide registration; church burial and obituaries earlier. |
| Land & deeds | good | 1734– | Record-loss / thin-series note: Formed 1734 from New Hanover: coastal plain with military (Camp Lejeune-era) place-name overlays late. Early research still needs New Hanover parent context. Early coastal-plain deeds; pre-formation New Hanover. Later military reservation and base-era place names complicate abstracting—confirm civilian land trails carefully. |
| Probate & estates | good | 1734– | Record-loss / thin-series note: Formed 1734 from New Hanover: coastal plain with military (Camp Lejeune-era) place-name overlays late. Early research still needs New Hanover parent context. Estates after formation; earlier New Hanover. Pair with equity and newspapers when thin. |
| Church & parish | partial | varies | Church coverage varies by denomination and survival. Baptisms, membership, and burial registers often beat early civil vitals; check local societies and denominational archives. |
| Newspapers | varies | varies | Jacksonville and coastal weeklies—verify DigitalNC holdings. Wilmington papers for regional notices. |
| Military | good | 1775– | Revolutionary through 20th-century service may generate pensions, CMSRs, militia notes, and wartime claims. Pair unit research with Onslow place context and neighboring counties when companies recruited across lines. |
| Cemeteries | partial | varies | Published surveys, Find a Grave, churchyards, and family plots. Unmarked burials are common—use obituaries, church books, and land descriptions. |
| Court records | partial | 1734– | Common pleas, sessions, and other court series often begin near formation (1734); equity may sit with or near probate. Pre-1734 under New Hanover. Known disruption: 1752 & 1755 storm destruction of records. |
| Tax lists | sparse | varies | Tax lists can substitute for missing census years and thin deed decades. Coverage is uneven by locality and year—check State Archives of North Carolina and published abstracts. |
Cemeteries & burial research
- Jacksonville / historic churchyards
- Onslow County cemeteries (Find a Grave / surveys)
Societies & repositories
Vital records
North Carolina statewide vital registration expanded in the early 20th century. For many Onslow County families you will rely on marriage bonds, church registers, Bible records, newspapers, delayed births, and probate—not only a modern certificate.
Research starting points
Courthouse & contacts
The county seat is Jacksonville. Confirm current Register of Deeds, Clerk of Superior Court, and library hours before visiting—offices move and digital portals change.
Public library: Onslow County Public Library
Record-loss / series note: Formed 1734 from New Hanover: coastal plain with military (Camp Lejeune-era) place-name overlays late. Early research still needs New Hanover parent context.
If not found here, try…
- Formed 1734
- Parent / earlier jurisdiction New Hanover — check district-era records before this county existed (districts guide).
Neighboring counties (deeds, marriages, newspapers, and kin often cross the line):
Local history & events
- DAR and SAR chapters bring Revolutionary War living history to Onslow County Library - WCTI
- Swansboro Church added to Onslow County African American Heritage Trail - WNCT
- Onslow County Museum now offering free admission to all visitors - WCTI
- 'Party like it's 1776': Museum's America 250 exhibit opens Saturday - The Daily News - Jacksonville, NC
Sources & further reading
- NCpedia — Onslow County
- David Leroy Corbitt, The Formation of the North Carolina Counties, 1663–1943
- William S. Powell, The North Carolina Gazetteer
- State Archives of North Carolina
- DigitalNC — Onslow County
- Chronicling America (Library of Congress)
- FamilySearch Wiki · NCGenWeb