Glossary

Rating territory

A geographic area, often a ZIP code or county, that an insurer prices as a unit because losses from weather, fire and theft differ from place to place.

Also called: territory, rating zone, rate territory, territory factor, ZIP code rating

A rating territory is a geographic pricing zone. Boundaries may follow ZIP codes, counties, census tracts or distance bands from the coast, and each insurer draws its own, supported by loss data. Hail, hurricane wind, wildfire, theft, litigation and fire response all vary by place, so insurers apply a filed territory factor that multiplies the base rate. Two houses with the same size, roof and deductible can pay differently only because they sit in different territories.

Say an insurer's filed factors are 1.00 for territory A and 1.45 for territory B. All else equal, the house in B starts with a premium 45% higher before any other factor is applied. The figures are hypothetical, but the mechanism is real, and it explains why a move of a few miles can change a quote.

Territories are not fixed. When an insurer files a revision it can redraw them, so a renewal increase may reflect a change in your territory factor rather than the overall rate. Regulators require territory definitions to be actuarially supported and not unfairly discriminatory, and they are reviewed in the rate filing. Ask your agent for your territory code. See what affects your homeowners insurance rate and how catastrophe models shape your premium for how territory pricing connects to modeled loss.

Last reviewed October 10, 2026

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Related terms

Rate filing The package of proposed prices, rating factors and supporting data that an insurer submits to a state regulator before or when it changes its homeowners rates. Catastrophe model Software that simulates thousands of possible hurricanes, quakes, wildfires and storms to estimate the losses an insurer's policies could suffer. Fire protection class The 1 to 10 number on a home insurance quote that reflects how close and well equipped the nearest fire department and water source are. Redlining The unlawful practice of refusing to insure, or charging more to insure, homes in certain neighborhoods because of residents' race or other protected traits. Underwriting How an insurer evaluates a home and its owner, decides whether to offer coverage and on what terms, and sets the price. Insurance score A number built from your credit report data that insurers use to predict how likely you are to file claims, and therefore how to price your policy.

Related guides

How catastrophe models shape your premium Catastrophe models estimate yearly losses from hurricanes, wildfires and storms. How that output reaches your rate, who checks the models and what you can fix. Fire protection class (ISO PPC) and your rate Your fire protection class grades local fire service from 1 to 10. How split classes work, why a hydrant 1,000 feet away matters, and how to find your class. Insurance redlining and fair housing law How the Fair Housing Act applies to homeowners insurance, what redlining looks like in underwriting and pricing, and where to complain if you suspect it. North Carolina's rate bureau and homeowners rates How the North Carolina Rate Bureau sets homeowners base rates, what the 2025 and 2026 settlements allow, and what consent-to-rate notices mean for you. How insurers file rate increases with regulators A rate filing is an insurer's request to change its prices. What goes into one, how regulators review it, how to read an average increase and where to find it. What affects your homeowners insurance rate Location and rebuilding cost set most of a homeowners premium; roof, age, claims, credit, deductible and discounts adjust it. Which factors you can change.