- 9carriers selling 2027 marketplace plans in Williamson County
- 157plans on the Williamson shelf, from 41 bronze to 53 gold
- $736benchmark silver for a 40 year old in Williamson, full price per month
Who sells marketplace plans in Williamson County
No Texas county on my list has more carriers than Williamson County, with nine (tied with Bexar County). No single company dominates Williamson County, where the largest lineup is 28 plans (Oscar) and the smallest is 4 (Harbor Health).
| Carrier | Plans | Bronze | Silver | Gold | Network types |
|---|---|---|---|---|---|
| OscarOscar Insurance Company | 28 | 7 | 11 | 10 | EPO 14, HMO 14 |
| Antidote Health of TX New for 2027 | 27 | 9 | 9 | 9 | EPO 27 |
| Ambetter from Superior HealthPlan | 24 | 4 | 12 | 8 | EPO 17, HMO 7 |
| Blue Cross and Blue Shield of Texas | 23 | 6 | 7 | 7 | HMO 14, POS 9 |
| Wellpoint New for 2027 | 23 | 8 | 7 | 7 | HMO 14, POS 9 |
| UnitedHealthcare | 15 | 5 | 5 | 5 | HMO 15 |
| Imperial Insurance CompaniesImperial Insurance Companies, Inc. | 8 | 2 | 2 | 3 | HMO 8 |
| Sendero Health PlansSendero Health Plans, Local Nonprofit | 5 | 0 | 3 | 2 | HMO 5 |
| Harbor Health | 4 | 0 | 2 | 2 | HMO 4 |
Williamson plan counts from the CMS 2027 landscape file (county FIPS 48491, Rating Area 3). Bronze includes expanded bronze, and companies CMS lists under more than one legal issuer are grouped with the legal names underneath.
What changed in Williamson County for 2027
Baylor Scott and White Health Plan and Moda Health Plan together sold 15 of the 110 plans in Williamson County in 2026 and have no plans here in the 2027 CMS file. If you were enrolled with either company, you should have a notice by now. If you do nothing you are moved to a replacement plan picked on price and metal level, and nothing in that process checks your doctors or prescriptions. New in Williamson for 2027: Antidote Health of TX and Wellpoint. Williamson now has nine carriers and 157 plans, against nine carriers and 110 plans in 2026.
What it costs in Williamson County before any subsidy
These are the full monthly prices, before any premium tax credit, for the cheapest Williamson plan at each metal level. I show the sticker price because it is what your subsidy is subtracted from, and most people who enroll in Williamson pay less, often a lot less.
| Monthly premium, full price | Age 21 | Age 40 | Age 60 | Couple, both 40 | Couple 40 + 2 kids |
|---|---|---|---|---|---|
| Lowest bronze | $397 | $508 | $1,079 | $1,016 | $1,624 |
| Lowest silver | $565 | $723 | $1,534 | $1,445 | $2,310 |
| Benchmark silver (second lowest) | $576 | $736 | $1,563 | $1,472 | $2,354 |
| Lowest gold | $508 | $650 | $1,380 | $1,300 | $2,077 |
Benchmark silver is the second lowest of the 58 silver premiums listed for Williamson. The last column is two adults aged 40 plus two children.
What these numbers mean if you live in Williamson County
The gold row is the surprise in Williamson County. The cheapest gold plan for a 40 year old, $650 a month, is $73 cheaper than the cheapest silver plan at $723. That happens because Texas carriers load the cost of the extra silver discounts into silver premiums. If your income is too high for those discounts, silver is the worst value on the Williamson shelf, and a gold deductible here tops out at $4,000.
In Williamson County the benchmark is $228 above the cheapest bronze at age 40, and 25 of the other 78 counties and parishes I track have a wider one. That gap decides whether bronze can be free, because your subsidy is the $736 benchmark minus what the government expects you to pay from your income. A 40 year old in Williamson whose expected share is $228 a month or less would pay nothing for the cheapest bronze. At 60 the Williamson gap grows to $485 and at 21 it shrinks to $179, which is why older enrollees are the ones most likely to find a $0 plan.
Williamson County and Travis County share Rating Area 3, so the same plan costs the same in both, and the Williamson cheapest bronze and benchmark match Travis exactly. What differs is the menu, 157 plans in Williamson against 130 in Travis. Antidote Health of TX sells in Williamson but not in Travis.
Williamson plans by metal level, network and deductible
| Metal level | Plans | $0 deductible | Deductible range |
|---|---|---|---|
| Catastrophic | 5 | 0 | |
| Bronze | 8 | 0 | $8,700 to $11,750 |
| Expanded Bronze | 33 | 5 | $0 to $11,750 |
| Silver | 58 | 1 | $0 to $9,000 |
| Gold | 53 | 7 | $0 to $4,000 |
| Total | 157 | 13 |
There is not a single PPO on the 2027 marketplace in Williamson County. The 157 plans split into 81 HMO, 58 EPO and 18 POS. Outside emergencies, the 58 EPO and 81 HMO plans in Williamson generally pay nothing out of network, so the network list matters more than the premium. 13 plans in Williamson have a $0 medical deductible (7 gold, 5 expanded bronze and 1 silver). The 5 bronze ones among them still have out of pocket maximums of $10,600 to $12,000, so a $0 deductible does not mean a small bill.
Every Williamson price on this page is before subsidies, and most enrollees pay less. For a 40 year old in Williamson the premium tax credit is measured against the $736 benchmark. Estimate your own subsidy, or send me your ZIP and I will run the Williamson numbers for you.
2027 plans for Williamson County
These are the 2027 plans and prices for Williamson County, from the CMS plan file released at the end of October 2026. Open enrollment for 2027 coverage in Texas runs from November 1, 2026 to January 15, 2027, and December 15 is the last day to pick a plan that starts January 1. If you already have a Williamson plan, compare before you let it renew, because your carrier and your benchmark may both have changed.
Questions about Williamson County coverage
How many health insurance companies sell marketplace plans in Williamson County, Texas?
For 2027, nine carriers sell individual marketplace plans in Williamson County: Oscar, Antidote Health of TX, Ambetter from Superior HealthPlan, Blue Cross and Blue Shield of Texas, Wellpoint, UnitedHealthcare, Imperial Insurance Companies, Sendero Health Plans and Harbor Health. Together they offer 157 plans across the metal levels, according to the CMS plan landscape file.
What is the cheapest health insurance in Williamson County?
At full price before any subsidy, the cheapest bronze plan in Williamson County is $397 a month for a 21 year old, $508 at 40 and $1,079 at 60. In Williamson a couple both aged 40 pays $1,016 for the cheapest bronze, and two 40 year olds with two children pay $1,624. Catastrophic plans in Williamson, open only to people under 30 or with a hardship exemption, start at $371 at age 21. Most people in Williamson who qualify for a premium tax credit pay less than these prices.
What is the benchmark silver plan premium in Williamson County for 2027?
The second lowest cost silver plan, the benchmark your subsidy is calculated from, is $736 a month for a 40 year old in Williamson County before subsidies. In Williamson it is $576 at age 21 and $1,563 at age 60, and the lowest silver plan is $723 at 40.
Which insurance companies left Williamson County for 2027?
Baylor Scott and White Health Plan and Moda Health Plan sold 15 plans in Williamson County in 2026 and have no plans there in the 2027 CMS plan file. Carriers still selling from the 2026 lineup: Oscar, Ambetter from Superior HealthPlan, Blue Cross and Blue Shield of Texas, UnitedHealthcare, Imperial Insurance Companies, Sendero Health Plans and Harbor Health. New for 2027: Antidote Health of TX and Wellpoint.
Can I get a PPO plan in Williamson County?
Not on the 2027 marketplace. All 157 plans in Williamson County are HMO, EPO or POS plans. 13 of them have a $0 medical deductible, and the cheapest gold plan for a 40 year old in Williamson is $650 a month before subsidies.
More for Williamson County residents
- Health insurance brokers in Texas, how to choose one and what it costs
- Every 2027 carrier change in Texas
- How Williamson compares with the other 78 counties and parishes I track
- Estimate a Williamson subsidy
Get your Williamson County quote
Send me your ZIP and who needs coverage and I will compare every Williamson plan you qualify for with your subsidy applied, free and with no pressure.
Get my free quote → Or book a callSources
- Centers for Medicare & Medicaid Services, QHP Landscape Individual Market Medical, plan year 2027 (public use file), Williamson County rows
- HealthCare.gov, Health plan information for individuals and families
- healthinsurance.org, ACA open enrollment deadlines