Last official estimated population of Grand Forks County was 66,943 (year 2014)[1]. This was 0.021% of total US population and 8.8% of total North Dakota state population. Area of Grand Forks County is 1,439.5 mi² (=3728.3 km²), in this year population density was 46.50 p/mi². If population growth rate would be same as in period 2010-2014 (+0.03%/yr), Grand Forks County population in 2025 would be 67,169 [0].
Historical population of Grand Forks County for period 1880-2014 [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

[1880-1890] +11.38 %/yr
[1890-1900] +2.91 %/yr
[1900-1910] +1.32 %/yr
[1910-1920] +0.32 %/yr
[1920-1930] +1.05 %/yr
[1930-1940] +0.77 %/yr
[1940-1950] +1.34 %/yr
[1950-1960] +2.13 %/yr
[1960-1970] +2.3 %/yr
[1970-1980] +0.79 %/yr
[1980-1990] +0.67 %/yr
[1990-2000] -0.67 %/yr
[2000-2005] +0.15 %/yr
[2005-2010] +0.07 %/yr
[2010-2014] +0.03 %/yr
Looking for settlements in Grand Forks County? Visit this page: Settlements in Grand Forks County, ND
Population of Grand Forks County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 2393 | 2281 | 4,674 |
| 5 to 9 | 2198 | 1922 | 4,120 |
| 10 to 14 | 1708 | 1672 | 3,380 |
| 15 to 19 | 2999 | 2810 | 5,809 |
| 20 to 24 | 6627 | 5653 | 12,280 |
| 25 to 29 | 3426 | 2471 | 5,897 |
| 30 to 34 | 2480 | 2173 | 4,653 |
| 35 to 39 | 1942 | 1688 | 3,630 |
| 40 to 44 | 1644 | 1544 | 3,188 |
| 45 to 49 | 1605 | 1562 | 3,167 |
| 50 to 54 | 1975 | 2007 | 3,982 |
| 55 to 59 | 1948 | 2034 | 3,982 |
| 60 to 64 | 1782 | 1724 | 3,506 |
| 65 to 69 | 1258 | 1293 | 2,551 |
| 70 to 74 | 847 | 955 | 1,802 |
| 75 to 79 | 519 | 727 | 1,246 |
| 80 to 84 | 416 | 625 | 1,041 |
| 85+ | 389 | 841 | 1,230 |
Grand Forks 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 | 34794 | 32653 | 67,447 |
| WAC | 32801 | 31130 | 63,931 |
| WA | 31956 | 30345 | 62,301 |
| NHWAC | 31599 | 29982 | 61,581 |
| NHWA | 30832 | 29288 | 60,120 |
| BAC | 1755 | 1243 | 2,998 |
| IAC | 1351 | 1452 | 2,803 |
| NHBAC | 1653 | 1147 | 2,800 |
| H | 1362 | 1329 | 2,691 |
| NHIAC | 1225 | 1293 | 2,518 |
| BA | 1452 | 979 | 2,431 |
| HWAC | 1202 | 1148 | 2,350 |
| NHBA | 1385 | 926 | 2,311 |
| HWA | 1124 | 1057 | 2,181 |
| AAC | 1157 | 1001 | 2,158 |
| NHAAC | 1125 | 964 | 2,089 |
| IA | 940 | 1025 | 1,965 |
| NHIA | 873 | 924 | 1,797 |
| TOM | 915 | 842 | 1,757 |
| AA | 856 | 763 | 1,619 |
| NHAA | 844 | 751 | 1,595 |
| NHTOM | 825 | 738 | 1,563 |
| HIAC | 126 | 159 | 285 |
| HBAC | 102 | 96 | 198 |
| HTOM | 90 | 104 | 194 |
| NAC | 93 | 84 | 177 |
| HIA | 67 | 101 | 168 |
| NHNAC | 84 | 71 | 155 |
| HBA | 67 | 53 | 120 |
| HAAC | 32 | 37 | 69 |
| NA | 37 | 28 | 65 |
| NHNA | 35 | 26 | 61 |
| HAA | 12 | 12 | 24 |
| HNAC | 9 | 13 | 22 |
| HNA | 2 | 2 | 4 |
• Polk County population
49.8 mi,
102°
• Walsh County
33.6 mi,
338°
• Marshall County
58.7 mi,
59°
• Traill County
35.7 mi,
158°
• Pembina County
58.3 mi,
355°
• Norman County
61.7 mi,
131°
• Red Lake County
63.3 mi,
93°
• Nelson County
34.9 mi,
269°
• Griggs County
48.7 mi,
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• Steele County
35.1 mi,
200°
[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
*Pembina North Dakota Notes
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