| Year | City Population | County Population | City Water (MGY) | Annual Water Cost |
| 1900 | 1342 | 5610 |
|
|
| 1910 | 3454 | 12,453 |
|
|
| 1920 | 5777 | 12,720 |
|
|
| 1930 | 10,464 | 20,079 |
|
|
| 1940 | 13,844 | 23,799 |
|
|
| 1950 | 25,312 | 34,053 |
|
|
| 1960 | 42,390 | 58,195 | 2,215,379,625 |
|
| 1970 | 43,486 | 59,349 | 3,560,000,000 |
|
| 1980 | 46,492 | 70,361 | 3,510,000,000 | $1,340,499 |
| 1990 | 54,523 | 81,343 | 3,270,000,000 | $10,656,664 |
| 2000 | 59,607 | 88,565 | 4,508,584,300 | $7,316,033 |
| 2010 | 67,956 | 100,948 | 3,990,225,263 | $11,403,244 |
| 2017 | 75,488 (a) | 110,141 (b) | 3,995,951,700 (c) | $12,465,315 (c) |