---
title: Dorchester, SC — natural hazard risk profile & national ranking
source: FEMA National Risk Index (county-level)
sourceUrl: https://hazards.fema.gov/nri/
fips: 45035
---

# Dorchester, SC

South Carolina · pop. 161,445 · FIPS 45035

**FEMA risk rating: Relatively Moderate** · dominant hazard: Earthquake · modeled expected annual loss $176M/yr

These risk dimensions are FEMA/CDC MODELS (a rating, not records of disasters); population is a recorded census figure.

## Where Dorchester ranks among 3,232 U.S. counties

Each rank is COMPUTED — the county's modeled score placed within the national distribution. A rank within a model, not within observed disasters.

| Dimension | This county | National rank |
| --- | --- | --- |
| FEMA risk index | 93.7 | ≈ 94th pct — among the highest nationally (national median 50.02, n=3,144) |
| Expected annual loss | $176M | ≈ 54th pct — near the national middle (54th percentile) (national median $15M, n=3,232) |
| Social vulnerability | 16.03 | ≈ 16th pct — among the lowest nationally (national median 50.03, n=3,144) |
| Community resilience | 57.44 | ≈ 57th pct — near the national middle (57th percentile) (national median 50.02, n=3,144) |

## Realized flood losses in Dorchester (RECORDED — NFIP claims)

The National Flood Insurance Program has paid **779** flood-insurance claims totaling **$17M** in Dorchester since 1979. The costliest year of loss was **2015** ($9M paid).

| Metric | Value |
| --- | --- |
| Total claims paid | $16,848,166 |
| Claims | 779 |
| Average claim | $21,628 |
| Largest single claim | $334,943 |
| Claims since 2000 | 685 |
| In high-risk flood zones (A/V) | 73% |

These are **RECORDED** actual paid NFIP claims (a redacted census from OpenFEMA), not a model — the realized counterpart to the FEMA risk score above. **Scope:** flood-*insurance* claims UNDERCOUNT flooding where owners were uninsured ("what NFIP paid," not "every flood"); county-level totals, not a per-property verdict. Source: OpenFEMA NFIP Redacted Claims v2 (`src:openfema:nfip-claims-v2:2026`). Verify an address and buy coverage at https://www.floodsmart.gov/.

## What this is — and is NOT (interpretation)

This is FEMA/CDC **modeled** hazard exposure for Dorchester, SC and its national rank. It is **not** a verdict on whether Dorchester is a good or bad place to live (hazard exposure is not place quality), **not** a per-property or per-address assessment, **not** a prediction of any specific disaster, and **not** insurance advice. For site-specific risk use a per-property assessment; for the model see https://hazards.fema.gov/nri/.

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Structured data (JSON-LD), with each figure's status labeled: `/property/counties/45035.jsonld`