Last official estimated population of New Madrid County was 18,931 (year 2014)[1]. This was 0.006% of total US population and 0.3% of total Missouri state population. Area of New Madrid County is 696.6 mi² (=1804.1 km²), in this year population density was 27.18 p/mi². If population growth rate would be same as in period 2010-2014 (-0.03%/yr), New Madrid County population in 2026 would be 18,856 [0].
Historical population of New Madrid County 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] +0.88 %/yr
[1820-1830] +0.23 %/yr
[1830-1840] +6.84 %/yr
[1840-1850] +1.98 %/yr
[1850-1860] +0.2 %/yr
[1860-1870] +1.18 %/yr
[1870-1880] +1.93 %/yr
[1880-1890] +1.93 %/yr
[1890-1900] +1.93 %/yr
[1900-1910] +5.62 %/yr
[1910-1920] +2.6 %/yr
[1920-1930] +1.86 %/yr
[1930-1940] +2.77 %/yr
[1940-1950] -0.09 %/yr
[1950-1960] -2.27 %/yr
[1960-1970] -2.87 %/yr
[1970-1980] -0.2 %/yr
[1980-1990] -0.92 %/yr
[1990-2000] -0.61 %/yr
[2000-2005] -0.8 %/yr
[2005-2010] +0.04 %/yr
[2010-2014] -0.03 %/yr
Looking for settlements in New Madrid County? Visit this page: Settlements in New Madrid County, MO
Population of New Madrid County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 592 | 517 | 1,109 |
| 5 to 9 | 668 | 599 | 1,267 |
| 10 to 14 | 571 | 607 | 1,178 |
| 15 to 19 | 588 | 578 | 1,166 |
| 20 to 24 | 553 | 502 | 1,055 |
| 25 to 29 | 461 | 540 | 1,001 |
| 30 to 34 | 478 | 563 | 1,041 |
| 35 to 39 | 523 | 567 | 1,090 |
| 40 to 44 | 564 | 531 | 1,095 |
| 45 to 49 | 550 | 622 | 1,172 |
| 50 to 54 | 647 | 709 | 1,356 |
| 55 to 59 | 650 | 719 | 1,369 |
| 60 to 64 | 542 | 609 | 1,151 |
| 65 to 69 | 486 | 566 | 1,052 |
| 70 to 74 | 365 | 444 | 809 |
| 75 to 79 | 246 | 304 | 550 |
| 80 to 84 | 130 | 245 | 375 |
| 85+ | 130 | 306 | 436 |
New Madrid 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 | 8585 | 9402 | 17,987 |
| WAC | 7382 | 7832 | 15,214 |
| NHWAC | 7251 | 7728 | 14,979 |
| WA | 7239 | 7667 | 14,906 |
| NHWA | 7115 | 7572 | 14,687 |
| BAC | 1373 | 1697 | 3,070 |
| NHBAC | 1349 | 1679 | 3,028 |
| BA | 1283 | 1609 | 2,892 |
| NHBA | 1264 | 1593 | 2,857 |
| TOM | 146 | 168 | 314 |
| NHTOM | 139 | 158 | 297 |
| H | 159 | 126 | 285 |
| HWAC | 131 | 104 | 235 |
| HWA | 124 | 95 | 219 |
| IAC | 68 | 91 | 159 |
| NHIAC | 60 | 81 | 141 |
| AAC | 65 | 66 | 131 |
| NHAAC | 61 | 63 | 124 |
| AA | 48 | 52 | 100 |
| NHAA | 44 | 50 | 94 |
| IA | 25 | 25 | 50 |
| HBAC | 24 | 18 | 42 |
| NHIA | 20 | 22 | 42 |
| HBA | 19 | 16 | 35 |
| NAC | 7 | 14 | 21 |
| NHNAC | 7 | 13 | 20 |
| HIAC | 8 | 10 | 18 |
| HTOM | 7 | 10 | 17 |
| NHNA | 3 | 7 | 10 |
| NA | 3 | 7 | 10 |
| HIA | 5 | 3 | 8 |
| HAAC | 4 | 3 | 7 |
| HAA | 4 | 2 | 6 |
| HNAC | 0 | 1 | 1 |
| HNA | 0 | 0 | 0 |
• Scott County population
31.7 mi,
8°
• Dyer County
40 mi,
158°
• Dunklin County
37.9 mi,
216°
• Obion County
32.5 mi,
120°
• Stoddard County
24 mi,
317°
• Pemiscot County
27.5 mi,
195°
• Mississippi County
25.6 mi,
51°
• Lake County
20.3 mi,
152°
• Fulton County
26.1 mi,
96°
• Hickman County
38.3 mi,
81°
[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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