The median income of St. Tammany Parish residents was $31,040 per year, adjusted for inflation. It had 91,975 households with a population of 252,093.
The county with the highest median resident income in the state was Ascension Parish with $37,199 per year after adjusting for inflation – $6,159 more than St. Tammany Parish. It had 42,649 households with a population of 121,176.
The county with the lowest median resident income in the state was Tensas Parish with $14,775 per year after adjusting for inflation – $16,265 less than St. Tammany Parish. It had 1,825 households with a population of 4,666.
Louisiana counties by earnings per resident (2018)
| Rank | County | Earnings per resident |
|---|---|---|
| 1 | Ascension Parish | $37,199 |
| 2 | St. Charles Parish | $34,099 |
| 3 | St. Tammany Parish | $31,040 |
| 4 | Livingston Parish | $30,965 |
| 5 | Cameron Parish | $30,819 |
| 6 | West Baton Rouge Parish | $30,744 |
| 7 | Bossier Parish | $28,901 |
| 8 | Jefferson Parish | $28,639 |
| 9 | Lafayette Parish | $27,918 |
| 10 | East Baton Rouge Parish | $27,374 |
| 11 | Plaquemines Parish | $26,982 |
| 12 | St. James Parish | $26,928 |
| 13 | St. John the Baptist Parish | $26,903 |
| 14 | Lafourche Parish | $26,478 |
| 15 | Calcasieu Parish | $26,193 |
| 16 | Vernon Parish | $25,695 |
| 17 | Orleans Parish | $25,461 |
| 18 | St. Bernard Parish | $25,423 |
| 19 | Terrebonne Parish | $25,342 |
| 20 | St. Martin Parish | $25,313 |
| 21 | Vermilion Parish | $25,239 |
| 22 | De Soto Parish | $25,047 |
| 23 | Beauregard Parish | $24,802 |
| 24 | Iberville Parish | $24,560 |
| 25 | Ouachita Parish | $24,547 |
| 26 | West Feliciana Parish | $24,460 |
| 27 | Assumption Parish | $24,395 |
| 28 | Pointe Coupee Parish | $24,394 |
| 29 | Union Parish | $24,240 |
| 30 | Rapides Parish | $24,201 |
| 31 | St. Mary Parish | $23,877 |
| 32 | Iberia Parish | $23,751 |
| 33 | East Feliciana Parish | $23,690 |
| 34 | Caddo Parish | $23,537 |
| 35 | Tangipahoa Parish | $23,519 |
| 36 | Catahoula Parish | $23,268 |
| 37 | Acadia Parish | $22,095 |
| 38 | Allen Parish | $21,799 |
| 39 | Jefferson Davis Parish | $21,245 |
| 40 | Avoyelles Parish | $21,195 |
| 41 | LaSalle Parish | $21,170 |
| 42 | Jackson Parish | $21,048 |
| 43 | West Carroll Parish | $20,923 |
| 44 | Morehouse Parish | $20,856 |
| 45 | Concordia Parish | $20,620 |
| 46 | Sabine Parish | $20,572 |
| 47 | St. Helena Parish | $20,443 |
| 48 | Winn Parish | $20,437 |
| 49 | Franklin Parish | $19,990 |
| 50 | Grant Parish | $19,852 |
| 51 | Bienville Parish | $19,763 |
| 52 | St. Landry Parish | $19,509 |
| 53 | Red River Parish | $19,456 |
| 54 | Richland Parish | $19,321 |
| 55 | Lincoln Parish | $19,312 |
| 56 | Evangeline Parish | $18,797 |
| 57 | Caldwell Parish | $18,400 |
| 58 | Washington Parish | $18,139 |
| 59 | Webster Parish | $18,036 |
| 60 | Natchitoches Parish | $17,441 |
| 61 | East Carroll Parish | $17,422 |
| 62 | Madison Parish | $17,411 |
| 63 | Claiborne Parish | $16,355 |
| 64 | Tensas Parish | $14,775 |
* All values are inflation-adjusted
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