Data · July 2026 data · 15-month trend
South Dakota Flood Insurance Costs
South Dakota's flood insurance cost index stood at $1,137 in July 2026, measured across policies newly written or renewed that month. Against a national average of $986, the state sits 15.3% higher. That represents a 3.7% increase year over year. Across 225 transactions in 32 counties, the highest county-level average was $2,377 in Hughes County.
What we measure: Average premium among policies newly written or renewed that month (NFIP transactions) — not the official in-force average. OpenFEMA transaction data is published on a lag of roughly two months; the latest period shown reflects that lag.
Key facts — July 2026
- Average premium
- $1,137
- Avg total cost (with fees)
- $1,485
- Change (year over year)
- +3.7%
- vs national average
- +15.3%
- Policies written or renewed
- 225
- Counties reporting
- 32
South Dakota trend, last 15 months
Average premium among policies newly written or renewed each month. Bars scale to the highest month shown.
| Month | Avg premium | Premium relative to highest month | Avg total cost | Policies |
|---|---|---|---|---|
| May 2025 | $1,149 | $1,507 | 247 | |
| June 2025 | $1,147 | $1,494 | 279 | |
| July 2025 | $1,096 | $1,435 | 241 | |
| August 2025 | $1,096 | $1,442 | 279 | |
| September 2025 | $1,049 | $1,374 | 187 | |
| October 2025 | $1,072 | $1,407 | 178 | |
| November 2025 | $1,240 | $1,630 | 200 | |
| December 2025 | $1,035 | $1,356 | 119 | |
| January 2026 | $1,125 | $1,470 | 137 | |
| February 2026 | $1,127 | $1,471 | 150 | |
| March 2026 | $1,233 | $1,603 | 267 | |
| April 2026 | $1,095 | $1,429 | 286 | |
| May 2026 | $1,380 | $1,783 | 246 | |
| June 2026 | $1,330 | $1,714 | 251 | |
| July 2026 | $1,137 | $1,485 | 225 |
County breakdown — July 2026
Sorted by average premium, highest first. Rows labeled with a FIPS code are reporting areas without a matched county name. Watch the policy count before reading much into small-county averages.
| County | Avg premium | Premium relative to highest county | Avg total cost | Policies |
|---|---|---|---|---|
| Hughes County | $2,377 | $2,933 | 4 | |
| Meade County | $2,007 | $2,504 | 7 | |
| Minnehaha County | $1,857 | $2,342 | 20 | |
| Roberts County | $1,779 | $2,247 | 3 | |
| Stanley County | $1,717 | $2,195 | 7 | |
| Butte County | $1,629 | $2,069 | 6 | |
| Turner County | $1,161 | $1,442 | 1 | |
| Day County | $1,158 | $1,438 | 1 | |
| Aurora County | $1,135 | $1,411 | 1 | |
| Charles Mix County | $1,133 | $1,409 | 1 | |
| Codington County | $1,109 | $1,508 | 23 | |
| Union County | $1,100 | $1,396 | 26 | |
| Yankton County | $1,096 | $1,416 | 9 | |
| Brookings County | $1,075 | $1,427 | 13 | |
| Hutchinson County | $1,044 | $1,304 | 2 | |
| Pennington County | $959 | $1,305 | 31 | |
| Lake County | $918 | $1,236 | 14 | |
| Custer County | $881 | $1,112 | 3 | |
| McCook County | $881 | $1,112 | 4 | |
| Hamlin County | $876 | $1,218 | 2 | |
| Lawrence County | $857 | $1,084 | 6 | |
| Lincoln County | $849 | $1,170 | 7 | |
| Brown County | $796 | $1,086 | 12 | |
| Davison County | $699 | $921 | 9 | |
| Clark County | $645 | $1,058 | 1 | |
| Hanson County | $605 | $786 | 1 | |
| Sanborn County | $566 | $740 | 1 | |
| Kingsbury County | $552 | $780 | 4 | |
| Douglas County | $455 | $609 | 1 | |
| Ziebach County | $316 | $670 | 1 | |
| Beadle County | $292 | $491 | 3 | |
| Grant County | $175 | $504 | 1 |
Use this data
Download South Dakota CSV (south-dakota.csv) — free to reuse with attribution. Read the full methodology for formulas, update cadence, and limitations. Source: FEMA OpenFEMA NFIP policy transaction data (NFIP Redacted Policies v3).
"South Dakota Flood Insurance Costs." Out of the Storm News Flood Insurance Cost Index, July 2026, based on FEMA OpenFEMA NFIP policy transaction data. https://outofthestormnews.com/flood-insurance/costs/south-dakota
Related guides
Compare county data, then use the editorial guides to understand how NFIP coverage and pricing work in practice.