ZIP 78665 · Williamson County
Round Rock, TX Homeowners Insurance
According to U.S. Treasury FIO 2022 filings, homeowners insurance in ZIP 78665, Round Rock, Texas averages $1,764/yr.
- 80.8%
- Loss ratio
- #1316 of 1504
- Texas rank
- 740
- Policies
The verdict
At $1,764/yr, Round Rock, TX (ZIP 78665) sits in the 64th percentile nationally for homeowners insurance costs, 1% below the U.S. ZIP-code average.
- $1,764
- Avg premium (2022)
- -1%
- vs U.S. ZIP-code average
- +14.5%
- since 2018
- 64th
- national percentile
According to U.S. Treasury Federal Insurance Office data. How we calculate the percentile and national comparison: methodology.
Insurance Livability Score
PlainInsure's own composite of Treasury FIO premium/market data and FEMA National Risk Index hazard data, each dimension percentile-ranked against the full national corpus. Not an official government score, and not a substitute for an actual insurance quote.
Where ZIP 78665's premium sits nationally
Average annual homeowners premium across 25,593 tracked ZIP codes, as of 2022
$1,764 Around the middle lower than 36% of 25,593 ZIP codes
tracked ZIP codes, bucketed by value
Each bar is a $0.25K-wide band; taller bars hold more ZIP codes. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source U.S. Treasury Federal Insurance Office · 2022
Data Snapshot: ZIP 78665 (Round Rock, TX)
U.S. Treasury FIO ZIP-level observations put the average homeowners insurance premium in ZIP 78665 (Round Rock, TX) at $1,764 per year for 2022 across approximately 740 reported policies. Nationally, that ranks ZIP 78665 in the 64th percentile, 1% below the U.S. average of $1,776 per year. Against Texas's average of $2,349, ZIP 78665 is 25% below, ranking #1316 of 1504 tracked ZIPs in Texas by premium. The closest-priced peer within Texas is Nixon (ZIP 78140) at $1,764, essentially matching this ZIP's rate.
ZIP 78665 shows a 80.8% loss ratio, an indication that insurers retained a working margin after claims. Claim frequency, the share of policies with at least one claim, is 6.80%, and the average claim severity (amount paid per claim) is $20,974.
Premium data spanning 5 years shows ZIP 78665 costs have risen 14.5% since 2018, from a low of $1,541 to a high of $1,764, an annualized rate of +3.4% per year.
FEMA NRI places Williamson County in the upper risk band at 90.1 (Relatively Moderate): national 90th percentile, #24/245 inside Texas, and 78% above the 50.5 state mean. Top hazard on the map is Cold Wave. Social Vulnerability Index 10.6 · Community Resilience 87.9. NRI does not price policies; it situates the county.
How to read these numbers
The figures on this page come from the U.S. Treasury Federal Insurance Office, which collects homeowners insurance premium and claims data directly from the largest property insurers in the country. Because the data is aggregated at the ZIP-code level and averaged across many policies, it describes the typical cost in an area rather than a quote for any single home. Two houses on the same street can pay very different premiums depending on their age, construction type, roof condition, prior claims, and the specific coverage limits and deductibles the homeowner selects. The loss ratio shows how much of every premium dollar insurers paid back out as claims; a ratio above one means carriers lost money locally, which often precedes rate increases or carrier exits. Rising nonrenewal and claim frequency reveal how stressed the local market has become. Use these figures to gauge the direction and scale of costs in your area, then request quotes from several licensed carriers before buying or renewing a policy. FIO data aggregates voluntary reporting from the 40 largest homeowners insurers, covering roughly 80% of the U.S. market, so figures represent market averages rather than individual policy quotes; your own premium will vary with dwelling value, deductible, coverage limits, construction type, and insurer-specific underwriting. This page is educational research only and is not insurance advice, homeowners should request quotes from multiple licensed carriers or an independent agent before purchasing or renewing coverage.
How ZIP 78665 Compares
Premium History
Average premium in ZIP 78665, 2018–2022
| Year | Avg Premium | YoY Change |
|---|---|---|
| 2018 | $1,541 | - |
| 2019 | $1,563 | +1.4% |
| 2020 | $1,589 | +1.7% |
| 2021 | $1,666 | +4.8% |
| 2022 | $1,764 | +5.9% |
Multi-year FIO trend for ZIP 78665 (5 years)
Similar ZIP Codes in Texas
Other ZIPs in Texas priced close to this one.
One of 1,503 ZIP codes with premium data in Texas, 9 are shown here.
Elevated FEMA NRI in Williamson County
County National Risk Index joined to ZIP 78665 via FIPS 48491. Hazard and vulnerability context from FEMA, not a premium driver and not a quote.
Social Vulnerability Index 10.6 · Community Resilience 87.9
County hazard ratings
- Wildfire
- Relatively Low
- Flooding
- Relatively Moderate
- Earthquake
- Very Low
- Hurricane
- Relatively Low
- Tornado
- Relatively High
- Hail
- Relatively High
- Winter weather
- Very High
Source: FEMA National Risk Index · state rollup: Texas NRI context · top counties by NRI score.
Cross-state FIO peers for a higher-NRI ZIP (Williamson County)
ZIP 78665's county NRI is 90.1 (Relatively Moderate). Peer ZIPs below are other-state only so the neighborhoods are not Texas containment.
Similar average premium
Nearest other-state ZIPs by average homeowners premium ($1,764/yr here).
Insurance Guides
More ways to read ZIP 78665's FIO filings
Source: U.S. Department of the Treasury, Federal Insurance Office (FIO) Homeowners Insurance Data (2018-2022). Premiums are ZIP-level averages and may not reflect individual policy costs
Frequently Asked Questions
How much is homeowners insurance in ZIP 78665? ▼
What affects homeowners insurance costs in Round Rock, TX? ▼
Is homeowners insurance expensive in ZIP 78665 compared to the national average? ▼
What is the nonrenewal rate in ZIP 78665? ▼
How have premiums trended in ZIP 78665 over 5 years? ▼
How does ZIP 78665 compare to the Texas state average? ▼
What is the FEMA National Risk Index score for ZIP 78665? ▼
What to do with ZIP 78665
This ZIP's premiums run at the 64th national percentile, but a single number is not a quote.
- See how Round Rock, TX compares to every other ZIP in Texas. Texas overview
- Check the ZIPs ranked highest and lowest nationwide before assuming this one is typical. View rankings
- Look up a different ZIP code to compare rates directly. Search ZIP codes
These figures are Treasury FIO aggregates for this ZIP, not a personal insurance quote.
Every figure on PlainInsure is rendered directly from U.S. Treasury Federal Insurance Office data, no number is typed in by an editor. This page draws directly on U.S. Treasury FIO data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.