Last official estimated population of St. Helena Parish was 11,171 (year 2014)[1]. This was 0.004% of total US population and 0.2% of total Louisiana state population. Area of St. Helena Parish is 409.5 mi² (=1060.6 km²), in this year population density was 27.28 p/mi². If population growth rate would be same as in period 2010-2014 (-0.07%/yr), St. Helena Parish population in 2024 would be 11,091 [0].
Historical population of St. Helena Parish for period 1820-2014 [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
[1820-1830] +2.9 %/yr
[1830-1840] -1.33 %/yr
[1840-1850] +2.61 %/yr
[1850-1860] +4.57 %/yr
[1860-1870] -2.7 %/yr
[1870-1880] +3.3 %/yr
[1880-1890] +0.72 %/yr
[1890-1900] +0.51 %/yr
[1900-1910] +0.79 %/yr
[1910-1920] -0.84 %/yr
[1920-1930] +0.08 %/yr
[1930-1940] +1.17 %/yr
[1940-1950] -0.57 %/yr
[1950-1960] +0.16 %/yr
[1960-1970] +0.82 %/yr
[1970-1980] -0.11 %/yr
[1980-1990] +0.05 %/yr
[1990-2000] +0.67 %/yr
[2000-2005] -0.06 %/yr
[2005-2010] +1.26 %/yr
[2010-2014] -0.07 %/yr
Looking for settlements in St. Helena Parish? Visit this page: Settlements in St. Helena Parish, LA
Population of St. Helena Parish by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 303 | 309 | 612 |
| 5 to 9 | 356 | 358 | 714 |
| 10 to 14 | 351 | 316 | 667 |
| 15 to 19 | 327 | 276 | 603 |
| 20 to 24 | 369 | 347 | 716 |
| 25 to 29 | 320 | 383 | 703 |
| 30 to 34 | 316 | 316 | 632 |
| 35 to 39 | 258 | 282 | 540 |
| 40 to 44 | 271 | 316 | 587 |
| 45 to 49 | 342 | 333 | 675 |
| 50 to 54 | 383 | 404 | 787 |
| 55 to 59 | 388 | 395 | 783 |
| 60 to 64 | 342 | 387 | 729 |
| 65 to 69 | 298 | 323 | 621 |
| 70 to 74 | 203 | 245 | 448 |
| 75 to 79 | 150 | 237 | 387 |
| 80 to 84 | 100 | 133 | 233 |
| 85+ | 69 | 113 | 182 |
St. Helena 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 | 5061 | 5393 | 10,454 |
| BAC | 2711 | 2980 | 5,691 |
| NHBAC | 2682 | 2961 | 5,643 |
| BA | 2679 | 2950 | 5,629 |
| NHBA | 2656 | 2937 | 5,593 |
| WAC | 2433 | 2489 | 4,922 |
| WA | 2375 | 2437 | 4,812 |
| NHWAC | 2376 | 2427 | 4,803 |
| NHWA | 2328 | 2383 | 4,711 |
| H | 85 | 80 | 165 |
| TOM | 61 | 58 | 119 |
| HWAC | 57 | 62 | 119 |
| HWA | 47 | 54 | 101 |
| NHTOM | 50 | 49 | 99 |
| IAC | 44 | 49 | 93 |
| NHIAC | 38 | 40 | 78 |
| HBAC | 29 | 19 | 48 |
| IA | 21 | 22 | 43 |
| NHIA | 20 | 18 | 38 |
| HBA | 23 | 13 | 36 |
| AAC | 14 | 17 | 31 |
| NHAAC | 13 | 14 | 27 |
| HTOM | 11 | 9 | 20 |
| HIAC | 6 | 9 | 15 |
| NHAA | 6 | 6 | 12 |
| AA | 6 | 6 | 12 |
| NAC | 7 | 2 | 9 |
| HNAC | 4 | 1 | 5 |
| HIA | 1 | 4 | 5 |
| NA | 4 | 0 | 4 |
| NHNAC | 3 | 1 | 4 |
| HAAC | 1 | 3 | 4 |
| HNA | 3 | 0 | 3 |
| NHNA | 1 | 0 | 1 |
| HAA | 0 | 0 | 0 |
• East Baton Rouge Parish population
29.9 mi, 
229°
• Livingston Parish
26.4 mi, 
182°
• Tangipahoa Parish
22.7 mi, 
127°
• Washington Parish
39.3 mi, 
87°
• Pike County
30.7 mi, 
36°
• East Feliciana Parish
19.9 mi, 
273°
• West Feliciana Parish
42.4 mi, 274°
• Walthall County
42.9 mi, 
56°
• Amite County
26.9 mi, 
348°
• Wilkinson County
43.4 mi, 
302°
[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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