Population History of Clinton County
Clinton County was among the first of the counties in Iowa to be settled and, by 1860, became one of the top-ten most populous counties until 2010 when it moved to number 11. At the time of the 1850 Federal Census, Clinton County was basically farm communities. In ten short years, Clinton County moved up to number 7. This was undoubtedly due to the advantage of navigation and trade on the Mississippi River and the logging industry as well as the fact that there was a railroad bridge across the Mississippi at Clinton. With the end of logging as well as the railroad shops, it's interesting that Clinton County has maintained it's population.
| Year | Population | Rank |
| 1850 | 2,822 | 26 |
| 1860 | 18,938 | 7 |
| 1870 | 35,357 | 4 |
| 1880 | 36,763 | 6 |
| 1890 | 41,199 | 7 |
| 1900 | 43,832 | 7 |
| 1910 | 45,394 | 7 |
| 1920 | 43,371 | 8 |
| 1930 | 44,377 | 8 |
| 1940 | 44,722 | 8 |
| 1950 | 49,664 | 8 |
| 1960 | 55,060 | 8 |
| 1970 | 56,749 | 10 |
| 1980 | 57,122 | 10 |
| 1990 | 51,040 | 10 |
| 2000 | 50,149 | 10 |
| 2010 | 49,116 | 11 |
Total Population for Iowa's Incorporated Places: 1850-1950
| POPULATION | |||||||||||
| AREA | 1950 | 1940 | 1930 | 1920 | 1910 | 1900 | 1890 | 1880 | 1870 | 1860 | 1850 |
| Lost Nation | 557 | 493 | 493 | 537 | 523 | --- | 213 | 193 | --- | --- | --- |
| Delmar | 415 | 434 | 480 | 527 | 548 | 592 | 518 | 410 | --- | --- | --- |
| Camanche | 1,212 | 814 | 728 | 610 | 629 | 713 | 753 | 762 | 840 | --- | --- |
| Clinton | 30,379 | 26,270 | 25,726 | 24,151 | 25,577 | 22,698 | 13,619 | 9,052 | 6,129 | --- | --- |
| Charlotte | 427 | 393 | 407 | 464 | 356 | --- | 231 | 294 | --- | --- | --- |
| Goose Lake | 148 | 145 | 128 | 97 | 110 | --- | 42 | 61 | --- | --- | --- |
| Andover | 80 | 72 | 76 | 83 | 51 | --- | --- | --- | --- | --- | --- |
| Toledo | 2,106 | 2,073 | 1,825 | 1,604 | 1,626 | 1,941 | 1,836 | 1,026 | 888 | --- | --- |
| Welton | 93 | 100 | 80 | 69 | 69 | --- | --- | --- | --- | --- | --- |
| Low Moor | 279 | 252 | 271 | 277 | 253 | 318 | --- | --- | --- | --- | --- |
| Grand Mound | 526 | 526 | 438 | 463 | 428 | 355 | 247 | 234 | --- | --- | --- |
| Calamus | 381 | 384 | 374 | 399 | 270 | 287 | 216 | 163 | --- | --- | --- |
| Wheatland | 568 | 535 | 539 | 549 | 539 | 475 | 569 | 616 | 788 | --- | --- |
Source of the first table: U.S. Bureau of the Census, Decennial Census
1900-1990 Cenuses: Population of Counties by Decennial Census: 1900
to 1990 Compiled
and edited by Richard L. Forstall, Population Division U.S. Bureau
of the Census
1850-1890 Censuses: Eleventh Census of the United States - 1890,
Table 4
Prepared By: State Library of Iowa, State Data Center Program,
800-248-4483
Source of the second table: https://www.iowadatacenter.org/