Last official estimated population of Hill County was 16,142 (year 2014)[1]. This was 0.005% of total US population and 1.6% of total Montana state population. Area of Hill County is 2,916.3 mi² (=7553.3 km²), in this year population density was 5.54 p/mi². If population growth rate would be same as in period 2010-2014 (+0.07%/yr), Hill County population in 2026 would be 16,281 [0].
Historical population of Hill County for period 1920-2014 [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
[1920-1930] -0.13 %/yr
[1930-1940] -0.35 %/yr
[1940-1950] +0.71 %/yr
[1950-1960] +2.7 %/yr
[1960-1970] -0.72 %/yr
[1970-1980] +0.36 %/yr
[1980-1990] -0.19 %/yr
[1990-2000] -0.57 %/yr
[2000-2005] -0.98 %/yr
[2005-2010] +0.28 %/yr
[2010-2014] +0.07 %/yr
Looking for settlements in Hill County? Visit this page: Settlements in Hill County, MT
Population of Hill County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 704 | 707 | 1,411 |
| 5 to 9 | 615 | 598 | 1,213 |
| 10 to 14 | 603 | 607 | 1,210 |
| 15 to 19 | 600 | 531 | 1,131 |
| 20 to 24 | 642 | 576 | 1,218 |
| 25 to 29 | 626 | 546 | 1,172 |
| 30 to 34 | 560 | 515 | 1,075 |
| 35 to 39 | 433 | 459 | 892 |
| 40 to 44 | 444 | 432 | 876 |
| 45 to 49 | 429 | 416 | 845 |
| 50 to 54 | 549 | 502 | 1,051 |
| 55 to 59 | 585 | 602 | 1,187 |
| 60 to 64 | 522 | 461 | 983 |
| 65 to 69 | 391 | 384 | 775 |
| 70 to 74 | 242 | 286 | 528 |
| 75 to 79 | 188 | 214 | 402 |
| 80 to 84 | 130 | 195 | 325 |
| 85+ | 98 | 204 | 302 |
Hill 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 | 8103 | 7950 | 16,053 |
| WAC | 6399 | 6197 | 12,596 |
| NHWAC | 6238 | 6005 | 12,243 |
| WA | 6117 | 5947 | 12,064 |
| NHWA | 5979 | 5788 | 11,767 |
| IAC | 2048 | 2135 | 4,183 |
| NHIAC | 1943 | 2029 | 3,972 |
| IA | 1828 | 1938 | 3,766 |
| NHIA | 1742 | 1853 | 3,595 |
| TOM | 294 | 262 | 556 |
| H | 258 | 285 | 543 |
| NHTOM | 270 | 228 | 498 |
| HWAC | 161 | 192 | 353 |
| HWA | 138 | 159 | 297 |
| HIAC | 105 | 106 | 211 |
| AAC | 96 | 91 | 187 |
| NHAAC | 92 | 82 | 174 |
| BAC | 107 | 65 | 172 |
| HIA | 86 | 85 | 171 |
| NHBAC | 97 | 52 | 149 |
| AA | 53 | 51 | 104 |
| NHAA | 50 | 50 | 100 |
| BA | 64 | 28 | 92 |
| NHBA | 59 | 22 | 81 |
| HTOM | 24 | 34 | 58 |
| NAC | 17 | 24 | 41 |
| NHNAC | 15 | 22 | 37 |
| HBAC | 10 | 13 | 23 |
| NA | 5 | 9 | 14 |
| HAAC | 4 | 9 | 13 |
| NHNA | 3 | 9 | 12 |
| HBA | 5 | 6 | 11 |
| HAA | 3 | 1 | 4 |
| HNAC | 2 | 2 | 4 |
| HNA | 2 | 0 | 2 |
• Cascade County population
107.6 mi, 
212°
• Fergus County
105.5 mi, 
157°
• Blaine County
54 mi, 
105°
• Pondera County
100.8 mi, 
254°
• Teton County
114.8 mi, 
240°
• Chouteau County
53.7 mi, 
196°
• Toole County
74.3 mi, 
270°
• Phillips County
103.2 mi, 
104°
• Liberty County
42.8 mi, 
263°
• Judith Basin County
110.9 mi, 
184°
[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
*Chouteau Montana Notes
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