Last official estimated population of Martin County was 146,978 (year 2014)[1]. This was 0.046% of total US population and 0.7% of total Florida state population. Area of Martin County is 753.1 mi² (=1950.5 km²), in this year population density was 195.17 p/mi². If population growth rate would be same as in period 2010-2014 (+0.11%/yr), Martin County population in 2022 would be 148,307 [0].
Historical population of Martin County for period 1930-2014 [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
[1930-1940] +2.11 %/yr
[1940-1950] +2.18 %/yr
[1950-1960] +8.05 %/yr
[1960-1970] +5.17 %/yr
[1970-1980] +8.61 %/yr
[1980-1990] +4.66 %/yr
[1990-2000] +2.31 %/yr
[2000-2005] +2.28 %/yr
[2005-2010] +0.61 %/yr
[2010-2014] +0.11 %/yr
Looking for settlements in Martin County? Visit this page: Settlements in Martin County, FL
Population of Martin County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 3247 | 3035 | 6,282 |
| 5 to 9 | 3532 | 3457 | 6,989 |
| 10 to 14 | 3746 | 3718 | 7,464 |
| 15 to 19 | 4056 | 3729 | 7,785 |
| 20 to 24 | 4163 | 3342 | 7,505 |
| 25 to 29 | 3927 | 3103 | 7,030 |
| 30 to 34 | 3720 | 3050 | 6,770 |
| 35 to 39 | 3413 | 3106 | 6,519 |
| 40 to 44 | 4071 | 3947 | 8,018 |
| 45 to 49 | 4821 | 4768 | 9,589 |
| 50 to 54 | 5623 | 5765 | 11,388 |
| 55 to 59 | 5802 | 6157 | 11,959 |
| 60 to 64 | 5217 | 5867 | 11,084 |
| 65 to 69 | 5496 | 6237 | 11,733 |
| 70 to 74 | 4978 | 5769 | 10,747 |
| 75 to 79 | 4048 | 4437 | 8,485 |
| 80 to 84 | 3137 | 3669 | 6,806 |
| 85+ | 3010 | 4229 | 7,239 |
Martin 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 | 68927 | 71607 | 140,534 |
| WA | 67962 | 70698 | 138,660 |
| NH | 65123 | 68468 | 133,591 |
| NHWAC | 59442 | 63624 | 123,066 |
| NHWA | 58709 | 62887 | 121,596 |
| H | 10884 | 8917 | 19,801 |
| HWAC | 9485 | 7983 | 17,468 |
| HWA | 9253 | 7811 | 17,064 |
| BAC | 5433 | 4302 | 9,735 |
| NHBAC | 4961 | 3888 | 8,849 |
| BA | 4922 | 3851 | 8,773 |
| NHBA | 4582 | 3541 | 8,123 |
| AAC | 1141 | 1350 | 2,491 |
| NHAAC | 1049 | 1280 | 2,329 |
| IAC | 1356 | 942 | 2,298 |
| TOM | 1068 | 1000 | 2,068 |
| AA | 857 | 1105 | 1,962 |
| NHAA | 811 | 1062 | 1,873 |
| IA | 1033 | 617 | 1,650 |
| NHTOM | 821 | 809 | 1,630 |
| HIAC | 954 | 552 | 1,506 |
| HIA | 878 | 486 | 1,364 |
| HBAC | 472 | 414 | 886 |
| NHIAC | 402 | 390 | 792 |
| HBA | 340 | 310 | 650 |
| HTOM | 247 | 191 | 438 |
| NAC | 238 | 191 | 429 |
| NHIA | 155 | 131 | 286 |
| NA | 165 | 114 | 279 |
| HNAC | 136 | 91 | 227 |
| NHNAC | 102 | 100 | 202 |
| HNA | 120 | 76 | 196 |
| HAAC | 92 | 70 | 162 |
| HAA | 46 | 43 | 89 |
| NHNA | 45 | 38 | 83 |
• Broward County population
61.7 mi, 
184°
• Palm Beach County
30.2 mi, 
185°
• Brevard County
85.9 mi, 
347°
• St. Lucie County
20.7 mi, 352°
• Osceola County
81.3 mi, 
326°
• Indian River County
44 mi, 345°
• Highlands County
60.6 mi, 
287°
• Okeechobee County
36.6 mi, 
304°
• Hendry County
59.8 mi, 
231°
• Glades County
49.6 mi, 
259°
[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
*Palm Beach Florida Notes
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