ZIP 77550 is in Galveston County, where EIA-861 records CenterPoint and TNMP beside 1 utility whose customers cannot choose a retailer; the delivery utility on your bill decides which applies. Cheapest at 500 kWh: CenterPoint: Octopus Energy Octo Simple 3 at 10.3¢/kWh; TNMP: Express Energy Speedy 12 at 12.3¢/kWh, as listed on Power to Choose on 2026-11-14.
OpenStream is not yet registered as a broker with the PUCT and earns nothing from any retailer. How we are paid.
Counties from the Census 2020 ZCTA-to-county file (largest land share first); utilities from EIA-861 2024 Service Territory, both read 2026-11-06.
The Census records Galveston in ZIP 77550, in Galveston County. The fuller page for this ZIP is Electricity in Galveston.
Which counties it is in and which delivery utilities serve them.