Last official estimated population of Pike County was 16,400 (year 2014)[1]. This was 0.005% of total US population and 0.1% of total Illinois state population. Area of Pike County is 848.9 mi² (=2198.6 km²), in this year population density was 19.32 p/mi². If population growth rate would be same as in period 2010-2014 (-0.05%/yr), Pike County population in 2024 would be 16,325 [0].
Historical population of Pike County for period 1830-2014 [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
[1830-1840] +17.21 %/yr
[1840-1850] +4.84 %/yr
[1850-1860] +3.77 %/yr
[1860-1870] +1.22 %/yr
[1870-1880] +0.93 %/yr
[1880-1890] -0.85 %/yr
[1890-1900] +0.19 %/yr
[1900-1910] -0.98 %/yr
[1910-1920] -0.63 %/yr
[1920-1930] -0.98 %/yr
[1930-1940] +0.4 %/yr
[1940-1950] -1.33 %/yr
[1950-1960] -0.75 %/yr
[1960-1970] -0.69 %/yr
[1970-1980] -0.15 %/yr
[1980-1990] -0.72 %/yr
[1990-2000] -0.12 %/yr
[2000-2005] -0.58 %/yr
[2005-2010] -0.52 %/yr
[2010-2014] -0.05 %/yr
Looking for settlements in Pike County? Visit this page: Settlements in Pike County, IL
Population of Pike County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 459 | 431 | 890 |
| 5 to 9 | 509 | 499 | 1,008 |
| 10 to 14 | 521 | 507 | 1,028 |
| 15 to 19 | 488 | 445 | 933 |
| 20 to 24 | 476 | 421 | 897 |
| 25 to 29 | 458 | 442 | 900 |
| 30 to 34 | 510 | 414 | 924 |
| 35 to 39 | 457 | 411 | 868 |
| 40 to 44 | 524 | 459 | 983 |
| 45 to 49 | 549 | 485 | 1,034 |
| 50 to 54 | 524 | 580 | 1,104 |
| 55 to 59 | 607 | 555 | 1,162 |
| 60 to 64 | 562 | 559 | 1,121 |
| 65 to 69 | 425 | 442 | 867 |
| 70 to 74 | 365 | 400 | 765 |
| 75 to 79 | 269 | 315 | 584 |
| 80 to 84 | 168 | 270 | 438 |
| 85+ | 156 | 360 | 516 |
Pike 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 |
| NH | 7901 | 7936 | 15,837 |
| WAC | 7710 | 7922 | 15,632 |
| WA | 7629 | 7859 | 15,488 |
| NHWAC | 7594 | 7865 | 15,459 |
| NHWA | 7516 | 7803 | 15,319 |
| BAC | 312 | 60 | 372 |
| NHBAC | 307 | 60 | 367 |
| BA | 267 | 31 | 298 |
| NHBA | 264 | 31 | 295 |
| H | 126 | 59 | 185 |
| HWAC | 116 | 57 | 173 |
| HWA | 113 | 56 | 169 |
| TOM | 83 | 65 | 148 |
| NHTOM | 80 | 64 | 144 |
| IAC | 47 | 43 | 90 |
| NHIAC | 42 | 40 | 82 |
| AAC | 36 | 36 | 72 |
| NHAAC | 36 | 36 | 72 |
| AA | 22 | 27 | 49 |
| NHAA | 22 | 27 | 49 |
| IA | 21 | 12 | 33 |
| NHIA | 17 | 10 | 27 |
| NAC | 6 | 2 | 8 |
| HIAC | 5 | 3 | 8 |
| NA | 5 | 1 | 6 |
| HIA | 4 | 2 | 6 |
| HBAC | 5 | 0 | 5 |
| NHNAC | 3 | 2 | 5 |
| HTOM | 3 | 1 | 4 |
| HNAC | 3 | 0 | 3 |
| HNA | 3 | 0 | 3 |
| HBA | 3 | 0 | 3 |
| NHNA | 2 | 1 | 3 |
| HAAC | 0 | 0 | 0 |
| HAA | 0 | 0 | 0 |
• Adams County population
29.8 mi, 
326°
• Lincoln County
39.1 mi, 
185°
• Morgan County
37.1 mi, 
79°
• Pike County
24.8 mi, 
217°
• Greene County
32.6 mi, 
124°
• Ralls County
34.2 mi, 
261°
• Schuyler County
39.5 mi, 
21°
• Brown County
24.4 mi, 17°
• Scott County
21.9 mi, 
87°
• Calhoun County
34 mi, 
159°
[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
*Madison Illinois Notes
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