Round Rock, just north of Austin, lives on the other side of the deregulation line from its famous neighbor: most Round Rock addresses choose a retail electricity plan, while Austin addresses a few miles south cannot.
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1,100+ Round Rock addresses · 4 ZIP codes · updated Jul 2026
Round Rock guides draw on 684,000+ observed U.S. provider assignments, including 1,100+ local ones. How we verify.
How gas works in Round Rock and beyond
Deposit
New customers or those transferring service to a new address may be assessed a new-service deposit. The deposit may be waived by enrolling in at least one of the following programs: e-statements or automatic payment. Unenrolling before completing 12 consecutive billing cycles may result in the deposit being reassessed.
Phone numbers
Round Rock gas emergency: evacuate first, alert Atmos Energy at (800) 700-2443, and call 811 before digging near lines.
How water works in Round Rock and beyond
The Austin–Round Rock boundary is one of the sharpest utility lines in Texas. Crossing it changes the entire electricity model.
Look up your districtType a street in Round Rock. We'll name the utilities on that Round Rock property.
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How electricity works in Round Rock and beyond
Round Rock residents don't pick the poles-and-wires company. The plan riding on top is the part Round Rock lets you choose.
wires vs. plans
For Round Rock outages, contact the delivery utility Oncor at (888) 313-6862, not the retailer on your statement.
Round Rock plays by deregulated rules even though Austin next door doesn't. Don't mix up the two cities' advice.
They're on opposite sides of Texas's deregulation line: Round Rock addresses in our sampling are in retail-choice territory with Oncor delivering, while Austin runs a municipal utility with no plan shopping. Moving between the two cities means switching models entirely.
The City of Round Rock, at every address we sampled. Its neighbors, Pflugerville, Hutto, Cedar Park, each run their own systems, so the city boundary is the water boundary.
The Round Rock addresses in our sampling all returned Oncor delivery with retail choice. Austin Energy's territory ends at Austin's service-area boundary, not at the 'Welcome to Round Rock' sign. A few blocks matter here, so check the specific building.
No. Gas is a separate setup. Texas Gas Service was the natural gas provider at every Round Rock address we sampled, and it has nothing to do with whichever retail electricity plan you pick for your Oncor-delivered power. Some Round Rock homes are all-electric, so check whether your place actually has gas appliances before opening an account. The lookup shows what your specific address needs.
Retail choice applies in Round Rock: Oncor is the fixed wires company; the plan provider is yours to pick. The wires company (Oncor) is fixed. Shop the plan on top.
Run the Round Rock lookup above. It returns your exact providers for each utility, with sign-up links, in about a minute.
In Round Rock, ESI ID means Electric Service Identifier: 17 digits that name the meter for Texas retailers. It's printed on electric bills, and retailers resolve it from the Round Rock service address when you sign up.
The Round Rock map orients you. This tool names the accounts to open.
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Provider data: 1,146 Round Rock-area addresses from our mapping database plus 10 geographically spread sample addresses, aggregated at ZIP level. Data refreshed Jul 2026. Territories vary address by address. Always confirm yours with the lookup. Reviewed by the Utility Wallet data team · How we verify provider data.
It depends on your address, even in Round Rock
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