27,577 people (2024 Census estimate, −2.5% since 2020)
405 square miles of land · 68 people per square mile
“Highest” and “lowest” are just order, not grades: a high rank for poverty or hazard losses means more of it. Each figure's source is in its section below.
4 active community water systems list Dillon County in the area they serve, reporting 28,330 people served in all (a system that crosses county lines counts its whole population).
| TRICO WATER COMPANY (SC1720001) groundwater · private · SC1720001 | 17,963 served |
| DILLON CITY OF (SC1710001) groundwater · local government · SC1710001 | 6,998 served |
| LATTA TOWN OF (SC1710002) groundwater · local government · SC1710002 | 2,076 served |
| LAKE VIEW TOWN OF (SC1710003) buys groundwater · local government · SC1710003 | 1,293 served |
Source: U.S. EPA Safe Drinking Water Information System (SDWIS), active community systems, . Look up any system's violations and test results with EPA's search using its ID.
About 98 people were held in Dillon County's jail, in Vera's latest figure (2019), or 553 per 100,000 residents ages 15–64. In 2014 it was about 105.
Source: Vera Institute of Justice, Incarceration Trends (built from federal Bureau of Justice Statistics jail surveys). Counties without their own jail, or that share one, may show no figure.
2 school districts have their office in Dillon County. School taxes are usually the largest part of a property tax bill.
Spent $69.9 million — $46 million to run schools, about $11,856 per student, plus $23 million on buildings and equipment. Money in: $9.5 million local (mostly property tax), $30.6 million state, $30.1 million federal.
Spent $23.6 million — $16.2 million to run schools, about $10,765 per student, plus $7.1 million on buildings and equipment. Money in: $4 million local (mostly property tax), $10.5 million state, $10.3 million federal. Long-term debt: $34,000.
Source: U.S. Census Bureau, 2023 Annual Survey of School System Finances. Districts are listed by the county of their main office; some serve neighboring counties too.
Source: County Health Rankings & Roadmaps 2025 (University of Wisconsin Population Health Institute), which gathers federal data (CDC, Census, and others); measures cover different recent years. Blank lines aren't reported for small counties.
Overall risk: Relatively Moderate compared with other U.S. counties. FEMA estimates natural hazards cost Dillon County about $35 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Low; social vulnerability: Very High.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
129 bridges in Dillon County: 32 in good condition, 83 fair, and 14 poor (10.9%). “Poor” means a main part — the deck, the beams, or the supports — is rated 4 or lower on the federal 0–9 scale. It doesn't mean unsafe to drive; unsafe bridges are closed.
| SC 9 over ROPERS MILL BRANCH · built 1920 | 8,300 vehicles a day |
| SC 34 over I-95 · built 1966 | 7,200 vehicles a day |
| S-17-198 over S.C.L. RAILROAD · built 1961 | 1,900 vehicles a day |
| SC 917 over CSX RAILROAD · built 1948 | 1,550 vehicles a day |
| SC 57 over BEAVERDAM CREEK · built 1941 | 1,150 vehicles a day |
| S-17-61 over HAYES SWAMP · built 1956 | 550 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $4.6 million of work in Dillon County in fiscal 2025, about $162 per resident — to the county, cities, schools, hospitals, nonprofits and others.
Source: USAspending.gov, grants by place of performance, fiscal 2025 (Oct. 2024 to Sept. 2025). Search it by county to see each award.
From Grants.gov: posted grants listing county governments as eligible, soonest deadline first; research-only and overseas programs left out; list updated 2026-10-13, refreshed weekly. 62 are open in all. Cities, towns, school districts and nonprofits have their own lists there.
Registration deadlines, early voting and polling places for South Carolina are on the federal site vote.gov, which links to the state's official election office.
The budget, property tax rates, audits, local officials and offices for Dillon County come from the county's own records, which we haven't gathered — not gathered, never hidden. See what a full county site looks like, or ask to have Dillon County built: brayden.ozark@gmail.com.
More of South Carolina: the state government and every county in South Carolina.
Nearby counties: Marion County (21 mi) · Marlboro County (23 mi) · Robeson County, NC (23 mi) · Florence County (31 mi) · Scotland County, NC (32 mi) · Darlington County (34 mi).