14,184 people (2024 Census estimate, +0.8% since 2020)
639 square miles of land · 22 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 Allamakee County in the area they serve, reporting 7,755 people served in all (a system that crosses county lines counts its whole population).
| WAUKON WATER DEPARTMENT groundwater · local government · IA0398082 | 3,827 served |
| POSTVILLE WATER DEPARTMENT groundwater · local government · IA0375053 | 2,513 served |
| LANSING WATER SUPPLY groundwater · local government · IA0345054 | 983 served |
| NEW ALBIN WATER SUPPLY groundwater · local government · IA0370047 | 432 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 6 people were held in Allamakee County's jail, in Vera's latest figure (2023), or 76 per 100,000 residents ages 15–64. In 2018 it was about 8.
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.
3 school districts have their office in Allamakee County. School taxes are usually the largest part of a property tax bill.
Spent $17.4 million — $14.3 million to run schools, about $12,277 per student, plus $2.4 million on buildings and equipment. Money in: $7.5 million local (mostly property tax), $8.9 million state, $2.4 million federal. Long-term debt: $6.2 million.
Spent $11 million — $9.9 million to run schools, about $14,210 per student, plus $695,000 on buildings and equipment. Money in: $3.6 million local (mostly property tax), $6.8 million state, $2.6 million federal. Long-term debt: $735,000.
Spent $5.3 million — $4.8 million to run schools, about $14,673 per student, plus $188,000 on buildings and equipment. Money in: $3.3 million local (mostly property tax), $2.6 million state, $497,000 federal. Long-term debt: $730,000.
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: Very Low compared with other U.S. counties. FEMA estimates natural hazards cost Allamakee County about $10.4 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Moderate; social vulnerability: Relatively Moderate.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
197 bridges in Allamakee County: 62 in good condition, 114 fair, and 21 poor (10.7%). “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.
| IA 9 over MISSISSIPPI RIVER · built 1931 | 2,200 vehicles a day |
| FM over BRANCH YELLOW RIVER · built 1999 | 933 vehicles a day |
| FM over WEXFORD CREEK · built 1970 | 530 vehicles a day |
| FM over BRANCH YELLOW RIVER · built 1922 | 373 vehicles a day |
| LOCAL RD over BR MISS RIVER · built 1978 | 294 vehicles a day |
| FM over CLEAR CREEK · built 1962 | 200 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $5.1 million of work in Allamakee County in fiscal 2025, about $360 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 Iowa 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 Allamakee 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 Allamakee County built: brayden.ozark@gmail.com.
More of Iowa: the state government and every county in Iowa.
Nearby counties: Crawford County, WI (23 mi) · Winneshiek County (24 mi) · Houston County, MN (28 mi) · Clayton County (30 mi) · Vernon County, WI (36 mi) · Fayette County (36 mi).