Last official estimated population of Grundy County was 50,098 (year 2014)[1]. This was 0.016% of total US population and 0.4% of total Illinois state population. Area of Grundy County is 430.4 mi² (=1114.9 km²), in this year population density was 116.39 p/mi². If population growth rate would be same as in period 2010-2014 (+0.02%/yr), Grundy County population in 2024 would be 50,186 [0].
Historical population of Grundy County for period 1850-2014 [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
[1850-1860] +13.13 %/yr
[1860-1870] +3.71 %/yr
[1870-1880] +1.14 %/yr
[1880-1890] +2.31 %/yr
[1890-1900] +1.39 %/yr
[1900-1910] +0.01 %/yr
[1910-1920] -2.59 %/yr
[1920-1930] +0.05 %/yr
[1930-1940] -0.15 %/yr
[1940-1950] +0.44 %/yr
[1950-1960] +1.52 %/yr
[1960-1970] +1.73 %/yr
[1970-1980] +1.43 %/yr
[1980-1990] +0.56 %/yr
[1990-2000] +1.5 %/yr
[2000-2005] +3.32 %/yr
[2005-2010] +2.53 %/yr
[2010-2014] +0.02 %/yr
Looking for settlements in Grundy County? Visit this page: Settlements in Grundy County, IL
Population of Grundy County by age groups male (M) and female (F)[1b]
Age Gr. | (M) | (F) | Total |
0 to 4 | 1645 | 1556 | 3,201 |
5 to 9 | 1924 | 1750 | 3,674 |
10 to 14 | 2040 | 1905 | 3,945 |
15 to 19 | 1750 | 1675 | 3,425 |
20 to 24 | 1513 | 1484 | 2,997 |
25 to 29 | 1408 | 1443 | 2,851 |
30 to 34 | 1741 | 1750 | 3,491 |
35 to 39 | 1749 | 1738 | 3,487 |
40 to 44 | 1747 | 1751 | 3,498 |
45 to 49 | 1777 | 1755 | 3,532 |
50 to 54 | 1858 | 1859 | 3,717 |
55 to 59 | 1689 | 1696 | 3,385 |
60 to 64 | 1389 | 1353 | 2,742 |
65 to 69 | 1067 | 1130 | 2,197 |
70 to 74 | 794 | 880 | 1,674 |
75 to 79 | 516 | 565 | 1,081 |
80 to 84 | 268 | 473 | 741 |
85+ | 266 | 521 | 787 |
Grundy 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 | 24418 | 24566 | 48,984 |
WA | 24115 | 24291 | 48,406 |
NH | 22704 | 23054 | 45,758 |
NHWAC | 22114 | 22461 | 44,575 |
NHWA | 21846 | 22228 | 44,074 |
H | 2437 | 2230 | 4,667 |
HWAC | 2304 | 2105 | 4,409 |
HWA | 2269 | 2063 | 4,332 |
BAC | 542 | 493 | 1,035 |
NHBAC | 485 | 419 | 904 |
BA | 414 | 359 | 773 |
NHBA | 372 | 310 | 682 |
AAC | 299 | 322 | 621 |
TOM | 319 | 293 | 612 |
NHAAC | 283 | 300 | 583 |
NHTOM | 279 | 248 | 527 |
AA | 189 | 232 | 421 |
NHAA | 176 | 216 | 392 |
IAC | 188 | 178 | 366 |
NHIAC | 92 | 112 | 204 |
IA | 98 | 94 | 192 |
HIAC | 96 | 66 | 162 |
HBAC | 57 | 74 | 131 |
HIA | 70 | 50 | 120 |
HBA | 42 | 49 | 91 |
HTOM | 40 | 45 | 85 |
NHIA | 28 | 44 | 72 |
NAC | 20 | 24 | 44 |
HAAC | 16 | 22 | 38 |
NHNAC | 14 | 15 | 29 |
HAA | 13 | 16 | 29 |
NA | 6 | 15 | 21 |
HNAC | 6 | 9 | 15 |
NHNA | 3 | 8 | 11 |
HNA | 3 | 7 | 10 |
• DuPage County population
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47.8 mi, 141°
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47.1 mi, 262°
[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
*La Salle Illinois Notes
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