38,975 people (2024 Census estimate, +3.7% since 2020)
385 square miles of land · 101 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.
8 active community water systems list Calloway County in the area they serve, reporting 30,774 people served in all (a system that crosses county lines counts its whole population).
| MURRAY WATER SYSTEM groundwater · local government · KY0180306 | 26,302 served |
| DEXTER ALMO HEIGHTS WATER DISTRICT buys groundwater · local government · KY0180102 | 2,275 served |
| SOUTH 641 WATER DISTRICT buys groundwater · local government · KY0180185 | 1,160 served |
| CENTER RIDGE WATER DISTRICT #2 groundwater · local government · KY0180509 | 377 served |
| CENTER RIDGE WATER SYSTEM groundwater · local government · KY0180549 | 273 served |
| CENTER RIDGE WATER DISTRICT #3 groundwater · local government · KY0180502 | 208 served |
| CENTER RIDGE WATER DISTRICT #4 groundwater · private · KY0183106 | 105 served |
| STELLA TRAILER PARK groundwater · private · KY0180914 | 74 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 136 people were held in Calloway County's jail, in Vera's latest figure (2026). In 2021 it was about 168.
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 Calloway County. School taxes are usually the largest part of a property tax bill.
Spent $46.4 million — $41.3 million to run schools, about $13,190 per student, plus $3.9 million on buildings and equipment. Money in: $15.4 million local (mostly property tax), $21.9 million state, $9.7 million federal. Long-term debt: $6.3 million.
Spent $30.5 million — $29 million to run schools, about $15,699 per student, plus $512,000 on buildings and equipment. Money in: $7.6 million local (mostly property tax), $14.6 million state, $9.6 million federal. Long-term debt: $16.6 million.
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 Low compared with other U.S. counties. FEMA estimates natural hazards cost Calloway County about $28.8 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Moderate; social vulnerability: Relatively High.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
211 bridges in Calloway County: 60 in good condition, 125 fair, and 26 poor (12.3%). “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.
| KY-121 over CLARKS R. S.OF MURRAY · built 1956 | 6,438 vehicles a day |
| KY-94 over BUTTERWORTH CREEK · built 1927 | 4,706 vehicles a day |
| KY-121 over BLOOD RIVER · built 1945 | 3,080 vehicles a day |
| KY-80 over FORK OF CLARKS RIVER · built 2004 | 2,498 vehicles a day |
| KY-94 over FORD CREEK · built 1927 | 1,934 vehicles a day |
| OLD SALEM RD over EAST FK-CLARKS RIVER · built 1984 | 674 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $21.7 million of work in Calloway County in fiscal 2025, about $585 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 Kentucky 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 Calloway 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 Calloway County built: brayden.ozark@gmail.com.
More of Kentucky: the state government and every county in Kentucky.
Nearby counties: Marshall County (18 mi) · Henry County, TN (20 mi) · Graves County (22 mi) · Trigg County (26 mi) · Stewart County, TN (28 mi) · Lyon County (30 mi).