Last official estimated population of St. James Parish was 22,030 (year 2014)[1]. This was 0.007% of total US population and 0.5% of total Louisiana state population. Area of St. James Parish is 257.8 mi² (=667.8 km²), in this year population density was 85.45 p/mi². If population growth rate would be same as in period 2010-2014 (-0.08%/yr), St. James Parish population in 2026 would be 21,815 [0].
Historical population of St. James Parish for period 1810-2014 [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

[1810-1820] +3.65 %/yr
[1820-1830] +3.05 %/yr
[1830-1840] +1.12 %/yr
[1840-1850] +2.65 %/yr
[1850-1860] +0.36 %/yr
[1860-1870] -1.24 %/yr
[1870-1880] +3.78 %/yr
[1880-1890] +0.66 %/yr
[1890-1900] +2.54 %/yr
[1900-1910] +1.31 %/yr
[1910-1920] -0.8 %/yr
[1920-1930] -3.2 %/yr
[1930-1940] +0.79 %/yr
[1940-1950] -0.79 %/yr
[1950-1960] +1.82 %/yr
[1960-1970] +0.72 %/yr
[1970-1980] +0.86 %/yr
[1980-1990] -0.29 %/yr
[1990-2000] +0.15 %/yr
[2000-2005] +0.19 %/yr
[2005-2010] +0.65 %/yr
[2010-2014] -0.08 %/yr
Looking for settlements in St. James Parish? Visit this page: Settlements in St. James Parish, LA
Population of St. James Parish by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 677 | 683 | 1,360 |
| 5 to 9 | 768 | 703 | 1,471 |
| 10 to 14 | 734 | 681 | 1,415 |
| 15 to 19 | 734 | 657 | 1,391 |
| 20 to 24 | 765 | 722 | 1,487 |
| 25 to 29 | 691 | 737 | 1,428 |
| 30 to 34 | 641 | 697 | 1,338 |
| 35 to 39 | 576 | 577 | 1,153 |
| 40 to 44 | 496 | 608 | 1,104 |
| 45 to 49 | 720 | 803 | 1,523 |
| 50 to 54 | 858 | 839 | 1,697 |
| 55 to 59 | 765 | 866 | 1,631 |
| 60 to 64 | 675 | 704 | 1,379 |
| 65 to 69 | 492 | 597 | 1,089 |
| 70 to 74 | 357 | 449 | 806 |
| 75 to 79 | 261 | 380 | 641 |
| 80 to 84 | 153 | 251 | 404 |
| 85+ | 121 | 200 | 321 |
St. James Parish 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 | 10287 | 10974 | 21,261 |
| WAC | 5426 | 5437 | 10,863 |
| WA | 5365 | 5364 | 10,729 |
| BAC | 5034 | 5691 | 10,725 |
| NHBAC | 5014 | 5663 | 10,677 |
| BA | 4993 | 5640 | 10,633 |
| NHBA | 4973 | 5613 | 10,586 |
| NHWAC | 5262 | 5289 | 10,551 |
| NHWA | 5202 | 5217 | 10,419 |
| H | 197 | 180 | 377 |
| HWAC | 164 | 148 | 312 |
| HWA | 163 | 147 | 310 |
| TOM | 68 | 83 | 151 |
| NHTOM | 67 | 82 | 149 |
| AAC | 44 | 59 | 103 |
| IAC | 43 | 53 | 96 |
| NHIAC | 40 | 53 | 93 |
| NHAAC | 33 | 54 | 87 |
| AA | 32 | 39 | 71 |
| NHAA | 21 | 34 | 55 |
| IA | 24 | 26 | 50 |
| NHIA | 22 | 26 | 48 |
| HBAC | 20 | 28 | 48 |
| HBA | 20 | 27 | 47 |
| HAAC | 11 | 5 | 16 |
| HAA | 11 | 5 | 16 |
| NAC | 5 | 4 | 9 |
| NHNAC | 5 | 4 | 9 |
| NA | 2 | 2 | 4 |
| NHNA | 2 | 2 | 4 |
| HIAC | 3 | 0 | 3 |
| HIA | 2 | 0 | 2 |
| HTOM | 1 | 1 | 2 |
| HNAC | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
• East Baton Rouge Parish population
40.1 mi,
333°
• Livingston Parish
29 mi,
7°
• Tangipahoa Parish
47.3 mi,
29°
• Ascension Parish
14.4 mi,
330°
• Lafourche Parish
43.9 mi,
146°
• St. Charles Parish
27.4 mi,
107°
• St. John the Baptist Parish
20.3 mi,
65°
• Iberville Parish
38.2 mi,
296°
• West Baton Rouge Parish
43.2 mi,
314°
• Assumption Parish
17.8 mi,
240°
[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
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