
Missouri's Hispanic population grew by a staggering 92.2% from 61,698 in 1990 to 118,592 in 2000. In contrast, Missouri's total population grew by 9.3% from just over 5.1 million in 1990 to slightly under 5.6 million in 2000.
Sullivan (2,164%), McDonald (1,577%), and Barry (1,027%) counties reported enormous percent increases since 1990 in Hispanic population due to expanding employment opportunities. Jackson County reported the largest increase in persons - 16,272, an 86.1% increase; followed by St. Louis county with 4,766, a 48.6% increase; and Clay county with 3,055, an 86.3% increase. Fifty-six of Missouri's 114 counties reported percentage increases from 1990 of over 100%.
Not all of Missouri counties experienced positive growth in Hispanic populations. Atchison, DeKalb, Worth, Dade, and Bollinger counties reported decreases in Hispanic populations. DeKalb County experienced the largest decline in the number of Hispanic persons, 75, a 37.5% decline. Atchison County experienced the largest percentage loss, a 58.7% decrease with the number of Hispanic persons decreasing by 61.
The Census Bureau admits that census race data for the 1990 and 2000 census are not directly comparable because individuals could only report one race in the 1990 census and could report multiple races in 2000. However, the differences between 1990 and 2000 for the Hispanic or Latino population were not affected because the Hispanic or Latino population may be of any race.

| Ten Largest Counties | Ten Smallest Counties | ||
|---|---|---|---|
| County | Population | County | Population |
| Jackson County | 35,160 | Atchison County | 43 |
| St. Louis County | 14,577 | Shelby County | 43 |
| City of St. Louis | 7,022 | Ralls County | 42 |
| Clay County | 6,594 | Scotland County | 42 |
| Greene County | 4,434 | Putnam County | 32 |
| St. Charles County | 4,176 | Schuyler County | 27 |
| Jasper County | 3,615 | Knox County | 26 |
| Boone County | 2,413 | Holt County | 21 |
| Pulaski County | 2,404 | Mercer County | 11 |
| Platte County | 2,211 | Worth County | 7 |
| Ten Largest Growth | Ten Smallest Growth | ||
| County | Persons | County | Persons |
| Jackson County | 16,272 | Putnam County | 8 |
| St. Louis County | 4,766 | Holt County | 5 |
| Clay County | 3,055 | Madison County | 4 |
| Jasper County | 2,818 | Monroe County | 4 |
| Greene County | 2,659 | Mercer County | 4 |
| McDonald County | 1,909 | Bollinger County | -2 |
| City of St. Louis | 1,898 | Worth County | -2 |
| St. Charles County | 1,868 | Dade County | -9 |
| Barry County | 1,561 | Atchison County | -61 |
| Pettis County | 1,258 | DeKalb County | -75 |
| Ten Fastest Growth | Ten Slowest Growth | ||
| County | Percentage Change | County | Percentage Change |
| Sullivan County | 2164.3% | Daviess County | 19.6% |
| McDonald County | 1577.7% | Nodaway County | 14.8% |
| Barry County | 1027.0% | Linn County | 10.6% |
| Moniteau County | 845.7% | Monroe County | 8.3% |
| Pettis County | 467.7% | Madison County | 6.5% |
| Lawrence County | 466.4% | Bollinger County | -2.9% |
| Saline County | 404.8% | Dade County | -11.8% |
| Taney County | 395.9% | Worth County | -22.2% |
| Dunklin County | 387.6% | DeKalb County | -37.5% |
| Jasper County | 353.6% | Atchison County | -58.7% |
| Hispanic Population by County -- 1990-2000 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| County | 2000 Popl. | 1990 Popl. | % Change from 1990 | Total Change from 1990 | County | 2000 Popl. | 1990 Popl. | % Change from 1990 | Total Change from 1990 |
| Missouri | 118,592 | 61,698 | 92.2% | 56,894 | Lincoln County | 444 | 219 | 102.7% | 225 |
| Adair County | 315 | 182 | 73.1% | 133 | Linn County | 104 | 94 | 10.6% | 10 |
| Andrew County | 138 | 103 | 34.0% | 35 | Livingston County | 94 | 63 | 49.2% | 31 |
| Atchison County | 43 | 104 | -58.7% | -61 | Macon County | 121 | 59 | 105.1% | 62 |
| Audrain County | 189 | 81 | 133.3% | 108 | Madison County | 66 | 62 | 6.5% | 4 |
| Barry County | 1,713 | 152 | 1027.0% | 1,561 | Maries County | 103 | 40 | 157.5% | 63 |
| Barton County | 119 | 57 | 108.8% | 62 | Marion County | 252 | 118 | 113.6% | 134 |
| Bates County | 179 | 82 | 118.3% | 97 | McDonald County | 2,030 | 121 | 1577.7% | 1,909 |
| Benton County | 153 | 78 | 96.2% | 75 | Mercer County | 11 | 7 | 57.1% | 4 |
| Bollinger County | 68 | 70 | -2.9% | -2 | Miller County | 231 | 101 | 128.7% | 130 |
| Boone County | 2,413 | 1,226 | 96.8% | 1,187 | Mississippi County | 129 | 40 | 222.5% | 89 |
| Buchanan County | 2,086 | 1,706 | 22.3% | 380 | Moniteau County | 435 | 46 | 845.7% | 389 |
| Butler County | 412 | 217 | 89.9% | 195 | Monroe County | 52 | 48 | 8.3% | 4 |
| Caldwell County | 67 | 50 | 34.0% | 17 | Montgomery County | 94 | 45 | 108.9% | 49 |
| Callaway County | 377 | 171 | 120.5% | 206 | Morgan County | 161 | 69 | 133.3% | 92 |
| Camden County | 346 | 170 | 103.5% | 176 | New Madrid County | 183 | 93 | 96.8% | 90 |
| Cape Girardeau County | 624 | 313 | 99.4% | 311 | Newton County | 1,147 | 353 | 224.9% | 794 |
| Carroll County | 73 | 40 | 82.5% | 33 | Nodaway County | 155 | 135 | 14.8% | 20 |
| Carter County | 72 | 33 | 118.2% | 39 | Oregon County | 113 | 32 | 253.1% | 81 |
| Cass County | 1,816 | 829 | 119.1% | 987 | Osage County | 77 | 56 | 37.5% | 21 |
| Cedar County | 153 | 58 | 163.8% | 95 | Ozark County | 90 | 56 | 60.7% | 34 |
| Chariton County | 47 | 19 | 147.4% | 28 | Pemiscot County | 315 | 89 | 253.9% | 226 |
| Christian County | 714 | 216 | 230.6% | 498 | Perry County | 93 | 72 | 29.2% | 21 |
| City of St. Louis | 7,022 | 5,124 | 37.0% | 1,898 | Pettis County | 1,527 | 269 | 467.7% | 1,258 |
| Clark County | 52 | 26 | 100.0% | 26 | Phelps County | 485 | 303 | 60.1% | 182 |
| Clay County | 6,594 | 3,539 | 86.3% | 3,055 | Pike County | 295 | 119 | 147.9% | 176 |
| Clinton County | 205 | 139 | 47.5% | 66 | Platte County | 2,211 | 1,161 | 90.4% | 1,050 |
| Cole County | 915 | 447 | 104.7% | 468 | Polk County | 350 | 173 | 102.3% | 177 |
| Cooper County | 143 | 96 | 49.0% | 47 | Pulaski County | 2,404 | 1,953 | 23.1% | 451 |
| Crawford County | 176 | 114 | 54.4% | 62 | Putnam County | 32 | 24 | 33.3% | 8 |
| Dade County | 67 | 76 | -11.8% | -9 | Ralls County | 42 | 14 | 200.0% | 28 |
| Dallas County | 147 | 65 | 126.2% | 82 | Randolph County | 282 | 179 | 57.5% | 103 |
| Daviess County | 55 | 46 | 19.6% | 9 | Ray County | 253 | 119 | 112.6% | 134 |
| DeKalb County | 125 | 200 | -37.5% | -75 | Reynolds County | 55 | 28 | 96.4% | 27 |
| Dent County | 112 | 89 | 25.8% | 23 | Ripley County | 132 | 78 | 69.2% | 54 |
| Douglas County | 110 | 90 | 22.2% | 20 | Saline County | 1,050 | 208 | 404.8% | 842 |
| Dunklin County | 824 | 169 | 387.6% | 655 | Schuyler County | 27 | 18 | 50.0% | 9 |
| Franklin County | 678 | 441 | 53.7% | 237 | Scotland County | 42 | 12 | 250.0% | 30 |
| Gasconade County | 64 | 35 | 82.9% | 29 | Scott County | 448 | 206 | 117.5% | 242 |
| Gentry County | 44 | 27 | 63.0% | 17 | Shannon County | 77 | 22 | 250.0% | 55 |
| Greene County | 4,434 | 1,775 | 149.8% | 2,659 | Shelby County | 43 | 23 | 87.0% | 20 |
| Grundy County | 165 | 77 | 114.3% | 88 | St. Charles County | 4,176 | 2,308 | 80.9% | 1,868 |
| Harrison County | 89 | 37 | 140.5% | 52 | St. Clair County | 95 | 33 | 187.9% | 62 |
| Henry County | 201 | 144 | 39.6% | 57 | St. Francois County | 447 | 239 | 87.0% | 208 |
| Hickory County | 68 | 29 | 134.5% | 39 | St. Louis County | 14,577 | 9,811 | 48.6% | 4,766 |
| Holt County | 21 | 16 | 31.3% | 5 | Ste. Genevieve County | 132 | 49 | 169.4% | 83 |
| Howard County | 88 | 45 | 95.6% | 43 | Stoddard County | 231 | 132 | 75.0% | 99 |
| Howell County | 450 | 161 | 179.5% | 289 | Stone County | 298 | 114 | 161.4% | 184 |
| Iron County | 62 | 44 | 40.9% | 18 | Sullivan County | 634 | 28 | 2164.3% | 606 |
| Jackson County | 35,160 | 18,888 | 86.1% | 16,272 | Taney County | 962 | 194 | 395.9% | 768 |
| Jasper County | 3,615 | 797 | 353.6% | 2,818 | Texas County | 221 | 113 | 95.6% | 108 |
| Jefferson County | 2,002 | 1,151 | 73.9% | 851 | Vernon County | 172 | 102 | 68.6% | 70 |
| Johnson County | 1,407 | 709 | 98.4% | 698 | Warren County | 314 | 152 | 106.6% | 162 |
| Knox County | 26 | 9 | 188.9% | 17 | Washington County | 170 | 83 | 104.8% | 87 |
| Laclede County | 401 | 141 | 184.4% | 260 | Wayne County | 65 | 44 | 47.7% | 21 |
| Lafayette County | 386 | 219 | 76.3% | 167 | Webster County | 400 | 140 | 185.7% | 260 |
| Lawrence County | 1,195 | 211 | 466.4% | 984 | Worth County | 7 | 9 | -22.2% | -2 |
| Lewis County | 77 | 26 | 196.2% | 51 | Wright County | 139 | 61 | 127.9% | 78 |