Rating Areas

Governance

Imported rating-area sets — each area keeps its CMS identifier and member counties or zips.

3sets

Set

Year

Coverage

Used by

US · CMS Rating Areas 2026Rating Areas · keyed by county · published by CMS

2026

National · 51 states

products

CA · MSSA RegionsMSSA Regions · keyed by county · published by CA DMHC

2026

CA only

products

US · Zip Rating Areas 2026Zip Areas · keyed by zip · published by Carrier filing

2026

National · 9 states

products