Last official estimated population of Cedar County was 18,511 (year 2014)[1]. This was 0.006% of total US population and 0.6% of total Iowa state population. Area of Cedar County is 581.9 mi² (=1507.1 km²), in this year population density was 31.81 p/mi². If population growth rate would be same as in period 2010-2014 (+0.02%/yr), Cedar County population in 2024 would be 18,541 [0].
Historical population of Cedar County for period 1840-2014 [1] , [2] , [3]:
Estimated population for 2014[1]. Population density is in p./sq.mi [4]. Changes are for period 2010-2015. Value is %/year. Boundary lines are approx. 2012 [5]. Click on flag to hide it.
Population • Density • Changes • Legends • Position
[1840-1850] +12.14 %/yr
[1850-1860] +12.63 %/yr
[1860-1870] +4.3 %/yr
[1870-1880] -0.41 %/yr
[1880-1890] -0.37 %/yr
[1890-1900] +0.6 %/yr
[1900-1910] -0.86 %/yr
[1910-1920] -0.12 %/yr
[1920-1930] -0.47 %/yr
[1930-1940] +0.07 %/yr
[1940-1950] +0.02 %/yr
[1950-1960] +0.51 %/yr
[1960-1970] -0.08 %/yr
[1970-1980] +0.54 %/yr
[1980-1990] -0.66 %/yr
[1990-2000] +0.41 %/yr
[2000-2005] +0.04 %/yr
[2005-2010] +0.31 %/yr
[2010-2014] +0.02 %/yr
Looking for settlements in Cedar County? Visit this page: Settlements in Cedar County, IA
Population of Cedar County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 478 | 470 | 948 |
| 5 to 9 | 603 | 617 | 1,220 |
| 10 to 14 | 631 | 651 | 1,282 |
| 15 to 19 | 613 | 563 | 1,176 |
| 20 to 24 | 453 | 404 | 857 |
| 25 to 29 | 447 | 419 | 866 |
| 30 to 34 | 541 | 541 | 1,082 |
| 35 to 39 | 571 | 515 | 1,086 |
| 40 to 44 | 559 | 536 | 1,095 |
| 45 to 49 | 615 | 630 | 1,245 |
| 50 to 54 | 715 | 774 | 1,489 |
| 55 to 59 | 732 | 697 | 1,429 |
| 60 to 64 | 650 | 598 | 1,248 |
| 65 to 69 | 516 | 488 | 1,004 |
| 70 to 74 | 353 | 395 | 748 |
| 75 to 79 | 245 | 320 | 565 |
| 80 to 84 | 190 | 254 | 444 |
| 85+ | 207 | 420 | 627 |
Cedar County resident population estimates by Sex, Race, and Hispanic Origin[1b]. For full list of abbrevations see: population.us/about page.
| Race | Male | Female | Total |
| WAC | 8982 | 9153 | 18,135 |
| NH | 8935 | 9146 | 18,081 |
| WA | 8869 | 9069 | 17,938 |
| NHWAC | 8818 | 9014 | 17,832 |
| NHWA | 8712 | 8940 | 17,652 |
| H | 184 | 146 | 330 |
| HWAC | 164 | 139 | 303 |
| HWA | 157 | 129 | 286 |
| TOM | 118 | 90 | 208 |
| NHTOM | 111 | 79 | 190 |
| AAC | 87 | 92 | 179 |
| BAC | 90 | 87 | 177 |
| NHAAC | 82 | 87 | 169 |
| NHBAC | 86 | 81 | 167 |
| AA | 60 | 68 | 128 |
| NHAA | 55 | 66 | 121 |
| IAC | 72 | 48 | 120 |
| NHIAC | 58 | 41 | 99 |
| BA | 43 | 45 | 88 |
| NHBA | 41 | 43 | 84 |
| IA | 23 | 17 | 40 |
| NHIA | 14 | 15 | 29 |
| HIAC | 14 | 7 | 21 |
| NAC | 12 | 8 | 20 |
| HTOM | 7 | 11 | 18 |
| NHNAC | 8 | 7 | 15 |
| HIA | 9 | 2 | 11 |
| HAAC | 5 | 5 | 10 |
| HBAC | 4 | 6 | 10 |
| NA | 6 | 3 | 9 |
| HAA | 5 | 2 | 7 |
| HNAC | 4 | 1 | 5 |
| NHNA | 2 | 3 | 5 |
| HNA | 4 | 0 | 4 |
| HBA | 2 | 2 | 4 |
• Linn County population
31.9 mi, 
311°
• Scott County
27.8 mi, 
108°
• Rock Island County
35.8 mi, 
125°
• Johnson County
24.6 mi, 
253°
• Clinton County
32 mi, 
74°
• Muscatine County
20 mi, 
177°
• Washington County
43.3 mi, 
225°
• Jones County
24.4 mi, 
1°
• Jackson County
39.4 mi, 
46°
• Louisa County
38.8 mi, 
189°
[0] Calculated by population.us from last known population growth rate, not official data.
[1] County population - 2014, archived from the original, retrieved 02/23/2016
[1b] Annual County Resident Population Estimates by Age, Sex, Race, and Hispanic Origin, (used only data for 2014) archived from the original, retrieved 02/23/2016
[2] County population - 2000-2010, archived from the original, retrieved 02/23/2016
[3] Population of States and Counties of the United States: 1790 to 1992, PDF, 15 Mb, census.gov, retrieved 02/23/2016
[4] County area, latitude longitude data, retrieved 02/23/2016
[5] County boundaries, CSV files on boundaries.us, retrived 03/18/2016
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