The county was named for Mathew D. Ector, a Confederate general and Texas jurist. Ector County was marked off in 1887 from land previously assigned to Tom Green County, and was attached to Midland, Crane, and Upton counties for judicial purposes. In 1891 Ector County was formally organized, with Odessa, the largest town, designated as the county seat.

[ Texas Counties ] [ Anderson Co ] [ Andrews Co ] [ Angelina Co ] [ Aransas Co ] [ Archer Co ] [ Armstrong Co ] [ Atascosa Co ] [ Atascosito District DEFUNCT ] [ Austin District/Municipality/Co ] [ Ayish Bayou District DEFUNCT ] [ Bailey Co ] [ Bandera Co ] [ Bastrop District/Co ] [ Baylor District/Co ] [ Beaver Co PROPOSED ] [ Bee Co ] [ Bell Co ] [ Bevil District/Municipality DEFUNCT ] [ Bexar Department/District/Municipality/Co ] [ Blanco Co ] [ Borden Co ] [ Bosque Co ] [ Bowie District/Co ] [ Brazoria District/Co ] [ Brazos Department/District/Co ] [ Brewster Co ] [ Briscoe Co ] [ Brooks Co ] [ Brown Co ] [ Buchanan Co DEFUNCT ] [ Buchel Co DEFUNCT ] [ Burleson Co ] [ Burnet Co PROPOSED ] [ Burnet Co ] [ Burnet Judicial Co DEFUNCT ] [ Caldwell Co ] [ Calhoun Co ] [ Callahan Co ] [ Cameron District/Co ] [ Camp Co ] [ Carson Co ] [ Cass Co ] [ Castro Co ] [ Chambers Co ] [ Cherokee Co ] [ Childress Co ] [ Cibolo Co DEFUNCT ] [ Clay District/Co ] [ Cochran Co ] [ Coke Co ] [ Coleman Co ] [ Collin Co ] [ Collingsworth Co ] [ Collinsworth Co NEVER USED ] [ Colorado District/Municipality/Co ] [ Columbia Municipality DEFUNCT ] [ Comal Co ] [ Comanche Co ] [ Concho Co ] [ Cooke District/Co ] [ Coryell Co ] [ Cottle Co ] [ Crane Co ] [ Crockett Co ] [ Crosby District/Co ] [ Culberson Co ] [ Dallam Co ] [ Dallas Co ] [ Darlington Co PROPOSED ] [ Davis Co CHANGED ] [ Dawson Co ] [ Dawson Co DEFUNCT ] [ Deaf Smith Co ] [ Delta Co ] [ Denton District/Co ] [ De Witt Co ALTERNATE SPELLING ] [ DeWitt Co ] [ Dickens Co ] [ Dimmit Co ] [ Donley District/Co ] [ Duval Co ] [ Eastland District/Co ]  • [ Ector Co ] •  [ Edwards Co ] [ Ellis Co ] [ El Paso District/Co ] [ Encinal Co DEFUNCT ] [ Erath Co ] [ Falfurrias Co PROPOSED ] [ Falls Co ] [ Fannin District/Co ] [ Fayette District/Co ] [ Fisher Co ] [ Floyd Co ] [ Foard Co ] [ Foley Co DEFUNCT ] [ Fort Bend District/Co ] [ Franklin Co PROPOSED ] [ Franklin Co ] [ Freestone Co ] [ Frio Co ] [ Gaines Co ] [ Galveston District/Co ] [ Garza Co ] [ Germania Co PROPOSED ] [ Gillespie Co ] [ Glasscock Co ] [ Goliad District/Municipality/Co ] [ Gonzales District/Municipality/Co ] [ Gray Co ] [ Grayson Co ] [ Greer Co DEFUNCT ] [ Gregg Co ] [ Grimes Co ] [ Guadalupe Co ] [ Guadalupe Victoria District ] [ Hale Co ] [ Hall Co ] [ Hamilton Judicial Co DEFUNCT ] [ Hamilton Co ] [ Hansford Co ] [ Hardeman District/Co ] [ Hardin Co ] [ Harris District/Co ] [ Harrisburg District/Municipality/Co CHANGED ] [ Harrison District/Municipality/Co ] [ Hartley Co ] [ Haskell Co ] [ Hays Co ] [ Hemphill Co ] [ Henderson Co ] [ Hidalgo District/Co ] [ Hill Co ] [ Hockley Co ] [ Hood Co ] [ Hopkins Co ] [ Houston District/Co ] [ Howard District/Co ] [ Hudspeth Co ] [ Hunt Co ] [ Hutchinson Co ] [ Independence Co PROPOSED ] [ Irion Co ] [ Jack District/Co ] [ Jackson District/Municipality/Co ] [ Jasper District/Co ] [ Jeff Davis Co ] [ Jefferson District/Co ] [ Jim Hogg Co ] [ Jim Wells Co ] [ Johnson Co ] [ Jones Co ] [ Karnes District/Co ] [ Kaufman Co ] [ Kendall Co ] [ Kenedy Co ] [ Kent Co ] [ Kerr Co ] [ Kimble Co ] [ King District/Co ] [ Kinney Co ] [ Kleberg Co ] [ Knox District/Co ] [ La Baca Co CHANGED ] [ Lamar District/Co ] [ Lamb Co ] [ Lampasas Co ] [ Lanham Co PROPOSED ] [ La Salle Co ] [ Latimer Co DEFUNCT ] [ La Vaca District/Co CHANGED ] [ Lavaca District/Co ] [ Lee Co ] [ Leon Co ] [ Liberty District/Municipality/Co ] [ Limestone Co ] [ Lipscomb Co ] [ Live Oak Co ] [ Llano Co ] [ Loving Co ] [ Lubbock Co ] [ Lynn Co ] [ Madison Judicial Co/Co ] [ Marion Co ] [ Martin District/Co ] [ Mason Co ] [ Matagorda District/Municipality/Co ] [ Maverick Co ] [ McCulloch Co ] [ McLennan Co ] [ McMullen Co ] [ Medina Co ] [ Menard Judicial Co/Co ] [ Menard Co DEFUNCT ] [ Midland Co ] [ Milam Municipality/District/Co ] [ Miller Co AR ] [ Mills Co ] [ Mina Municipality/Co CHANGED ] [ Mina District DEFUNCT ] [ Mineral Co PROPOSED ] [ Mitchell District/Co ] [ Montague Co ] [ Montgomery District/Co ] [ Moore Co ] [ Morris Co ] [ Motley Co ] [ Mottley Co NEVER USED ] [ Nacogdoches Department/Municipality/District/Co ] [ Navarro Co ] [ Navasota Co CHANGED ] [ Navasoto Co CHANGED ] [ Neches Judicial Co DEFUNCT ] [ Neches River District DEFUNCT ] [ Newton Co ] [ Nolan District/Co ] [ Northern Division of Liberty County Co DEFUNCT ] [ Nueces District/Co ] [ Ochiltree Co ] [ Oldham District/Co ] [ Orange Co ] [ Palo Pinto District/Co ] [ Panola Co ] [ Panola Judicial Co DEFUNCT ] [ Parker Co ] [ Parmer Co ] [ Paschal Co DEFUNCT ] [ Pat Dunn Co PROPOSED ] [ Pecos Co ] [ Pierdenales Co PROPOSED ] [ Plum Creek Co PROPOSED ] [ Polk Co ] [ Potter Co ] [ Presidio District/Co ] [ Rains Co ] [ Randal Co NEVER USED ] [ Randall Co ] [ Reagan Co ] [ Real Co ] [ Red River District/Co ] [ Reeves Co ] [ Refugio District/Municipality/Co ] [ Richland Co DEFUNCT ] [ Republic of the Rio Grande DEFUNCT ] [ Roanoke Co PROPOSED ] [ Roberts Co ] [ Robertson District/Co ] [ Rockwall Co ] [ Ross Co PROPOSED ] [ Runnels Co ] [ Rusk District/Co ] [ Sabine Co ] [ San Antonio Municipality DEFUNCT ] [ San Augustine District/Municipality/Co ] [ San Felipe Municipality DEFUNCT ] [ San Jacinto District RENAMED ] [ San Jacinto Co ] [ San Patricio District/Municipality/Co ] [ San Saba Co ] [ Santa Fe Co DEFUNCT ] [ Schleicher Co ] [ Scurry District/Co ] [ Shackelford Co ] [ Shelby Municipality/District/Co ] [ Sherman Co ] [ Smith Co ] [ Smith Judicial Co DEFUNCT ] [ Snow River District DEFUNCT ] [ Somervell Co ] [ Spring Creek Co DEFUNCT ] [ Starr District/Co ] [ Stephens Co ] [ Sterling Co ] [ Stonewall Co ] [ Sutton Co ] [ Swisher Co ] [ Tarrant Co ] [ Taylor Co ] [ Tenaha District/Municipality DEFUNCT ] [ Tenaja District/Municipality DEFUNCT ] [ Teneha District/Municipality DEFUNCT ] [ Tenehaw District/Municipality DEFUNCT ] [ Terrell Co ] [ Terry Co ] [ Throckmorton Co ] [ Titus Co ] [ Tom Green Co ] [ Travis District/Co ] [ Trinity Co ] [ Turney Co PROPOSED ] [ Tyler Co ] [ Upshur Co ] [ Upton Co ] [ Uvalde Co ] [ Val Verde Co ] [ Van Zandt Co ] [ Victoria District/Municipality/Co ] [ Viesca Municipality DEFUNCT ] [ Viesca Precinct DEFUNCT ] [ Waco Co DEFUNCT ] [ Walker Co ] [ Waller Co ] [ Ward Judicial Co/Co ] [ Ward Co DEFUNCT ] [ Washington District/Municipality/Co ] [ Waxford Municipality DEFUNCT ] [ Webb District/Co ] [ Webster Co DEFUNCT ] [ Wegefarth Co DEFUNCT ] [ Wexford Municipality DEFUNCT ] [ Wharton Co ] [ Wheeler District/Co ] [ Wichita Co ] [ Wilbarger District/Co ] [ Willacy Co ] [ Williamson Co ] [ Wilson Co ] [ Winkler Co ] [ Wise Co ] [ Wood Co ] [ Worth Co DEFUNCT ] [ Yoakum Co ] [ Young District/Co ] [ Zapata Co ] [ Zavala Co ] [ Zavalla Co CHANGED ]

This list contains or will contain all post offices known from Texas. Noted also are whether recent offices have had at least one precancel type, as listed in the Precancel Stamp Society's Town and Type Catalog of the United States and Territories, Sixth edition, Summer 1998, and from Fosters' personal knowledge. A link is provided to detailed precancel data for that location. The precancel device(s) may or may not still exist. An * indicates a discontinued post office or name change. Pester the active post offices so that devices can be retained or ordered. They may be found many times, but only have to be thrown away once. Precancel devices are not usually issued to branches, stations or contract post offices. Please see plans page for color legend.