June 2026 NFIP transactions
Flood Insurance Costs in Charleston County, South Carolina
In June 2026, NFIP policies newly written or renewed in Charleston County averaged $1,029 in premium and $1,332 in total policy cost across 5,671 transactions.
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.
Charleston County headline figures
- Average premium
- $1,029
- Average total cost
- $1,332
- Transactions
- 5,671
- State premium rank
- 4 of 10
newly written or renewed policies
premium plus included fees
minimum published threshold: 100
eligible counties in South Carolina
Charleston County, state, and national comparison
The county average premium was 34.2% above the state transaction average and 2.8% above the national transaction average. Its total policy cost was 33.0% above the state figure and 3.3% above the national figure.
| Geography | Avg premium | Avg total cost | Transactions |
|---|---|---|---|
| Charleston County | $1,029 | $1,332 | 5,671 |
| South Carolina | $767 | $1,002 | 20,741 |
| United States | $1,001 | $1,289 | 452,418 |
Charleston County illustrates a split benchmark: its $1,029 average premium was 34.2% above the state transaction average and 2.8% above the national transaction average. The shared source month contains 5,671 county transactions, so neither comparison mixes periods.
Descriptive rank context
- Premium in South Carolina
- 4 of 10
- Premium nationally
- 154 of 330
- Transaction volume nationally
- 16 of 330
Method nfip-county-ranks-v1. Premium ranks sort the same 330 eligible county rows by average premium, then transaction count, then FIPS; the state rank uses that state's eligible subset. Volume rank sorts by transaction count, then FIPS. These ranks describe one source month and are not a score or recommendation.
Method and limitations
- The figures describe policies newly written or renewed in June 2026; they are not FEMA's official average across all in-force policies.
- Only named counties with matching state and five-digit FIPS codes, finite cost values, and at least 100 transactions enter the comparison population.
- A monthly county average can change with the mix of properties renewing. It is not a household quote and does not include private flood insurance.
- State and national values use the same transaction-based source month. A larger sample does not mean a lower or higher household price.
Source: FEMA OpenFEMA NFIP policy transaction data (NFIP Redacted Policies v3). Snapshot generated 2026-08-30; source event through 2026-06-30. Read the complete methodology.