Last official estimated population of Ida County was 7,069 (year 2014)[1]. This was 0.002% of total US population and 0.2% of total Iowa state population. Area of Ida County is 432.1 mi² (=1119 km²), in this year population density was 16.36 p/mi². If population growth rate would be same as in period 2010-2014 (-0.07%/yr), Ida County population in 2024 would be 7,019 [0].
Historical population of Ida County for period 1860-2014 [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
[1860-1870] +18.05 %/yr
[1870-1880] +34.51 %/yr
[1880-1890] +9.34 %/yr
[1890-1900] +1.42 %/yr
[1900-1910] -0.87 %/yr
[1910-1920] +0.34 %/yr
[1920-1930] +0.21 %/yr
[1930-1940] -0.77 %/yr
[1940-1950] -0.32 %/yr
[1950-1960] -0.41 %/yr
[1960-1970] -1.1 %/yr
[1970-1980] -0.31 %/yr
[1980-1990] -0.63 %/yr
[1990-2000] -0.65 %/yr
[2000-2005] -1.23 %/yr
[2005-2010] -0.77 %/yr
[2010-2014] -0.07 %/yr
Looking for settlements in Ida County? Visit this page: Settlements in Ida County, IA
Population of Ida County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 240 | 258 | 498 |
| 5 to 9 | 265 | 217 | 482 |
| 10 to 14 | 235 | 193 | 428 |
| 15 to 19 | 213 | 196 | 409 |
| 20 to 24 | 167 | 182 | 349 |
| 25 to 29 | 162 | 173 | 335 |
| 30 to 34 | 221 | 186 | 407 |
| 35 to 39 | 187 | 172 | 359 |
| 40 to 44 | 187 | 150 | 337 |
| 45 to 49 | 167 | 194 | 361 |
| 50 to 54 | 252 | 251 | 503 |
| 55 to 59 | 287 | 271 | 558 |
| 60 to 64 | 264 | 233 | 497 |
| 65 to 69 | 201 | 194 | 395 |
| 70 to 74 | 146 | 165 | 311 |
| 75 to 79 | 129 | 146 | 275 |
| 80 to 84 | 94 | 139 | 233 |
| 85+ | 100 | 205 | 305 |
Ida 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 | 3473 | 3476 | 6,949 |
| NH | 3441 | 3459 | 6,900 |
| WA | 3438 | 3447 | 6,885 |
| NHWAC | 3400 | 3412 | 6,812 |
| NHWA | 3365 | 3384 | 6,749 |
| H | 76 | 66 | 142 |
| HWAC | 73 | 64 | 137 |
| HWA | 73 | 63 | 136 |
| TOM | 38 | 30 | 68 |
| NHTOM | 38 | 29 | 67 |
| BAC | 36 | 28 | 64 |
| NHBAC | 35 | 28 | 63 |
| IAC | 25 | 29 | 54 |
| NHIAC | 23 | 26 | 49 |
| AAC | 22 | 22 | 44 |
| NHAAC | 22 | 22 | 44 |
| BA | 19 | 12 | 31 |
| NHBA | 18 | 12 | 30 |
| AA | 11 | 18 | 29 |
| NHAA | 11 | 18 | 29 |
| IA | 10 | 18 | 28 |
| NHIA | 8 | 16 | 24 |
| HIAC | 2 | 3 | 5 |
| HIA | 2 | 2 | 4 |
| NAC | 2 | 0 | 2 |
| NHNAC | 2 | 0 | 2 |
| NA | 1 | 0 | 1 |
| NHNA | 1 | 0 | 1 |
| HBAC | 1 | 0 | 1 |
| HBA | 1 | 0 | 1 |
| HTOM | 0 | 1 | 1 |
| HNAC | 0 | 0 | 0 |
| HAAC | 0 | 0 | 0 |
| HAA | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
• Woodbury County population
27.9 mi, 
270°
• Plymouth County
43.2 mi, 
303°
• Carroll County
40.8 mi, 
126°
• Buena Vista County
30.5 mi, 
37°
• Crawford County
24.8 mi, 
165°
• O'Brien County
48.2 mi, 
352°
• Cherokee County
25.1 mi, 345°
• Sac County
20.5 mi, 
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• Calhoun County
44.1 mi, 90°
• Monona County
33 mi, 
224°
[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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