The median income of Collin County residents was $45,254 per year, adjusted for inflation. It had 331,336 households with a population of 944,350.
The county with the lowest median resident income in the state was Starr County with $13,459 per year after adjusting for inflation – $31,795 less than Collin County. It had 16,238 households with a population of 63,894.
Top 100 counties by earnings per resident (2018)
| Rank | County | Earnings per resident |
|---|---|---|
| 1 | Collin County | $45,254 |
| 2 | Rockwall County | $42,223 |
| 3 | Fort Bend County | $40,587 |
| 4 | Borden County | $40,441 |
| 5 | Denton County | $39,350 |
| 6 | Midland County | $38,480 |
| 7 | Williamson County | $38,468 |
| 8 | Brazoria County | $38,462 |
| 9 | King County | $37,563 |
| 10 | Travis County | $37,402 |
| 11 | Carson County | $36,631 |
| 12 | Reagan County | $36,406 |
| 13 | Montgomery County | $35,858 |
| 14 | Sterling County | $35,385 |
| 15 | McMullen County | $34,435 |
| 16 | Comal County | $33,957 |
| 17 | Randall County | $33,585 |
| 18 | Kendall County | $33,547 |
| 19 | Guadalupe County | $33,106 |
| 20 | Chambers County | $32,746 |
| 21 | Ellis County | $32,629 |
| 22 | Yoakum County | $32,363 |
| 23 | Galveston County | $32,160 |
| 24 | Andrews County | $32,158 |
| 25 | Tarrant County | $32,029 |
| 26 | Hartley County | $32,001 |
| 27 | Parker County | $31,936 |
| 28 | Crockett County | $31,871 |
| 29 | Archer County | $31,454 |
| 30 | Wilson County | $31,415 |
| 31 | Sutton County | $31,340 |
| 32 | Johnson County | $31,213 |
| 33 | Kaufman County | $31,058 |
| 34 | Irion County | $31,045 |
| 35 | Ector County | $31,032 |
| 36 | Armstrong County | $30,833 |
| 37 | Harris County | $30,657 |
| 38 | Austin County | $30,445 |
| 39 | Ward County | $30,440 |
| 40 | Cooke County | $30,308 |
| 41 | Hays County | $30,293 |
| 42 | Hood County | $30,201 |
| 43 | Dallas County | $30,118 |
| 44 | Hardin County | $30,109 |
| 45 | Martin County | $29,951 |
| 46 | Moore County | $29,621 |
| 47 | Upton County | $29,575 |
| 48 | Bastrop County | $29,527 |
| 49 | Orange County | $29,416 |
| 50 | Roberts County | $29,405 |
| 51 | Kent County | $29,375 |
| 52 | Blanco County | $29,162 |
| 53 | Lipscomb County | $28,872 |
| 54 | Lampasas County | $28,851 |
| 55 | Sherman County | $28,825 |
| 56 | Wise County | $28,678 |
| 57 | Winkler County | $28,638 |
| 58 | Scurry County | $28,544 |
| 59 | Wheeler County | $28,440 |
| 60 | Burleson County | $28,429 |
| 61 | Bell County | $28,292 |
| 62 | Lee County | $28,189 |
| 63 | Hemphill County | $28,163 |
| 64 | Montague County | $28,135 |
| 65 | Karnes County | $28,052 |
| 66 | Gillespie County | $28,041 |
| 67 | Somervell County | $27,928 |
| 68 | Colorado County | $27,765 |
| 69 | Crane County | $27,658 |
| 70 | Lavaca County | $27,456 |
| 71 | Parmer County | $27,449 |
| 72 | Fayette County | $27,412 |
| 73 | Gaines County | $27,394 |
| 74 | Jackson County | $27,310 |
| 75 | Dallam County | $27,294 |
| 75 | Grayson County | $27,294 |
| 77 | Deaf Smith County | $27,269 |
| 78 | Fisher County | $27,169 |
| 79 | Bexar County | $27,125 |
| 80 | Castro County | $27,060 |
| 81 | Calhoun County | $27,046 |
| 82 | Briscoe County | $27,039 |
| 83 | Burnet County | $26,898 |
| 84 | Pecos County | $26,872 |
| 85 | Goliad County | $26,871 |
| 86 | Jefferson County | $26,861 |
| 87 | Franklin County | $26,793 |
| 88 | Schleicher County | $26,774 |
| 89 | Tom Green County | $26,737 |
| 90 | Nueces County | $26,702 |
| 91 | Victoria County | $26,700 |
| 92 | Gonzales County | $26,697 |
| 93 | Comanche County | $26,664 |
| 94 | Washington County | $26,639 |
| 95 | Harrison County | $26,566 |
| 96 | DeWitt County | $26,505 |
| 97 | Liberty County | $26,431 |
| 98 | Walker County | $26,341 |
| 99 | Smith County | $26,317 |
| 100 | Fannin County | $26,291 |
* All values are inflation-adjusted
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