Last official estimated population of St. Joseph County was 61,259 (year 2014)[1]. This was 0.019% of total US population and 0.6% of total Michigan state population. Area of St. Joseph County is 521.0 mi² (=1349.5 km²), in this year population density was 117.57 p/mi². If population growth rate would be same as in period 2010-2014 (-0.01%/yr), St. Joseph County population in 2026 would be 61,151 [0].
Historical population of St. Joseph 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] +18.33 %/yr
[1840-1850] +6.06 %/yr
[1850-1860] +5.27 %/yr
[1860-1870] +2.14 %/yr
[1870-1880] +0.13 %/yr
[1880-1890] -0.49 %/yr
[1890-1900] -0.59 %/yr
[1900-1910] +0.65 %/yr
[1910-1920] +0.51 %/yr
[1920-1930] +1.33 %/yr
[1930-1940] +0.36 %/yr
[1940-1950] +1 %/yr
[1950-1960] +1.9 %/yr
[1960-1970] +1.14 %/yr
[1970-1980] +1.7 %/yr
[1980-1990] +0.49 %/yr
[1990-2000] +0.58 %/yr
[2000-2005] -0.04 %/yr
[2005-2010] -0.32 %/yr
[2010-2014] -0.01 %/yr
Looking for settlements in St. Joseph County? Visit this page: Settlements in St. Joseph County, MI
Population of St. Joseph County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 2061 | 1891 | 3,952 |
| 5 to 9 | 2219 | 2082 | 4,301 |
| 10 to 14 | 2178 | 2192 | 4,370 |
| 15 to 19 | 2053 | 1906 | 3,959 |
| 20 to 24 | 1888 | 1778 | 3,666 |
| 25 to 29 | 1755 | 1738 | 3,493 |
| 30 to 34 | 1799 | 1802 | 3,601 |
| 35 to 39 | 1724 | 1732 | 3,456 |
| 40 to 44 | 1831 | 1698 | 3,529 |
| 45 to 49 | 1940 | 1822 | 3,762 |
| 50 to 54 | 2230 | 2243 | 4,473 |
| 55 to 59 | 2152 | 2173 | 4,325 |
| 60 to 64 | 1947 | 2046 | 3,993 |
| 65 to 69 | 1550 | 1709 | 3,259 |
| 70 to 74 | 1154 | 1306 | 2,460 |
| 75 to 79 | 812 | 955 | 1,767 |
| 80 to 84 | 539 | 712 | 1,251 |
| 85+ | 439 | 890 | 1,329 |
St. Joseph 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 | 28995 | 29365 | 58,360 |
| WA | 28378 | 28743 | 57,121 |
| NH | 27969 | 28561 | 56,530 |
| NHWAC | 26835 | 27378 | 54,213 |
| NHWA | 26271 | 26819 | 53,090 |
| H | 2302 | 2114 | 4,416 |
| HWAC | 2160 | 1987 | 4,147 |
| HWA | 2107 | 1924 | 4,031 |
| BAC | 1225 | 1195 | 2,420 |
| NHBAC | 1134 | 1111 | 2,245 |
| BA | 869 | 841 | 1,710 |
| NHBA | 808 | 788 | 1,596 |
| TOM | 633 | 645 | 1,278 |
| NHTOM | 579 | 579 | 1,158 |
| IAC | 393 | 385 | 778 |
| AAC | 305 | 380 | 685 |
| NHAAC | 292 | 367 | 659 |
| NHIAC | 297 | 294 | 591 |
| AA | 206 | 273 | 479 |
| NHAA | 198 | 266 | 464 |
| IA | 181 | 164 | 345 |
| NHIA | 111 | 107 | 218 |
| HIAC | 96 | 91 | 187 |
| HBAC | 91 | 84 | 175 |
| HIA | 70 | 57 | 127 |
| HTOM | 54 | 66 | 120 |
| HBA | 61 | 53 | 114 |
| NAC | 16 | 25 | 41 |
| NHNAC | 14 | 16 | 30 |
| HAAC | 13 | 13 | 26 |
| HAA | 8 | 7 | 15 |
| NA | 4 | 9 | 13 |
| HNAC | 2 | 9 | 11 |
| HNA | 2 | 7 | 9 |
| NHNA | 2 | 2 | 4 |
• St. Joseph County population
44.4 mi,
242°
• Kalamazoo County
23.1 mi,
358°
• Elkhart County
27.8 mi,
219°
• Calhoun County
34.8 mi,
48°
• Cass County
24.5 mi,
270°
• Noble County
35.4 mi,
171°
• Branch County
23.4 mi,
88°
• DeKalb County
44.4 mi,
142°
• LaGrange County
19.2 mi,
165°
• Steuben County
32.6 mi,
124°
[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
*Oakland Michigan Notes
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