Texas · Rating Area 3 · Plan year 2026
Health insurance cost in Williamson County
Insurers filed 110 individual marketplace plans that are actually sold in Williamson County — from 10 companies. For a 40-year-old non-smoker, prices start at $432.65 a month, with a typical (median) plan at $681.50 — about $15 above the Texas median.
Source: CMS Exchange Public Use Files · imported 2026-07-28 · methodology
Premiums by age in Williamson County
| Age | Lowest / month | Median / month |
|---|---|---|
| 21 | $338.54 | $533.26 |
| 30 | $384.24 | $605.24 |
| 40 | $432.65 | $681.50 |
| 50 | $604.63 | $952.40 |
| 60 | $918.79 | $1447.26 |
One non-smoking adult, all metal levels combined. Federal rules cap the 64-year-old price at three times the 21-year-old price — see the full Texas age curve.
By metal level (age 40)
| Metal level | Plans | Lowest | Median |
|---|---|---|---|
| Catastrophic | 1 | $629.62 | $629.62 |
| Bronze | 3 | $450.19 | $466.37 |
| Expanded Bronze | 24 | $432.65 | $541.95 |
| Silver | 43 | $607.90 | $746.19 |
| Gold | 39 | $570.81 | $670.17 |
Higher metal = higher premium but lower costs when you use care. If your income qualifies for cost-sharing reductions, they apply only on Silver plans — a Silver plan can then beat Bronze on total cost.
Cheapest plans at age 40
| Insurer | Plan | Metal | Monthly |
|---|---|---|---|
| Sendero Health Plans, Local Nonprofit | Sendero Health Quality Care Bronze High Deductible / $50 PCP / $25 Gen | Expanded Bronze · HMO | $432.65 |
| Baylor Scott and White Health Plan | BSW Savers Bronze HMO H S A 006 | Expanded Bronze · HMO | $437.20 |
| Baylor Scott and White Health Plan | BSW Savers Bronze HMO H S A 007 (CMS Standardized Plan with $0 Pediat | Expanded Bronze · HMO | $444.20 |
| Baylor Scott and White Health Plan | BSW Savers Bronze HMO H S A 009 | Expanded Bronze · HMO | $449.40 |
| UnitedHealthcare | UHC Bronze Essential ($0 Virtual Urgent Care) | Bronze · HMO | $450.19 |
Lowest premium is not always lowest total cost — check deductibles and networks before choosing. Catastrophic plans have enrollment restrictions above age 30.
Who sells here
Oscar Insurance Company (23 plans) · Blue Cross and Blue Shield of Texas (22 plans) · Ambetter from Superior HealthPlan (18 plans) · UnitedHealthcare (14 plans) · Baylor Scott and White Health Plan (10 plans) · Sendero Health Plans, Local Nonprofit (7 plans) · Imperial Insurance Companies, Inc. (7 plans) · Moda Health Plan, Inc. (5 plans) · Harbor Health (4 plans)
No insurer covers all of Texas, so this line-up is specific to Williamson County. Compare nearby markets: Harris County · Dallas County · Tarrant County · Bexar County · Travis County · Collin County · Denton County · Hidalgo County · El Paso County · Fort Bend County · Montgomery County · Cameron County · Nueces County · Brazoria County · Bell County · Galveston County · Lubbock County · Webb County · Jefferson County · McLennan County · Smith County · Brazos County · Hays County · Ellis County — or the statewide view.