Last official estimated population of Kent County was 162,954 (year 2014)[1]. This was 0.051% of total US population and 17.2% of total Delaware state population. Area of Kent County is 798.3 mi² (=2067.7 km²), in this year population density was 204.12 p/mi². If population growth rate would be same as in period 2010-2014 (+0.1%/yr), Kent County population in 2026 would be 164,901 [0].
Historical population of Kent County for period 1790-2014 [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

[1790-1800] +0.33 %/yr
[1800-1810] +0.47 %/yr
[1810-1820] +0.14 %/yr
[1820-1830] -0.43 %/yr
[1830-1840] -0.02 %/yr
[1840-1850] +1.39 %/yr
[1850-1860] +2 %/yr
[1860-1870] +0.7 %/yr
[1870-1880] +0.99 %/yr
[1880-1890] -0.06 %/yr
[1890-1900] +0.03 %/yr
[1900-1910] -0.01 %/yr
[1910-1920] -0.53 %/yr
[1920-1930] +0.26 %/yr
[1930-1940] +0.79 %/yr
[1940-1950] +0.95 %/yr
[1950-1960] +5.66 %/yr
[1960-1970] +2.24 %/yr
[1970-1980] +1.83 %/yr
[1980-1990] +1.23 %/yr
[1990-2000] +1.34 %/yr
[2000-2005] +2.66 %/yr
[2005-2010] +2.34 %/yr
[2010-2014] +0.1 %/yr
Looking for settlements in Kent County? Visit this page: Settlements in Kent County, DE
Population of Kent County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 5788 | 5380 | 11,168 |
| 5 to 9 | 5713 | 5497 | 11,210 |
| 10 to 14 | 5840 | 5613 | 11,453 |
| 15 to 19 | 5858 | 5950 | 11,808 |
| 20 to 24 | 6853 | 6540 | 13,393 |
| 25 to 29 | 6067 | 6097 | 12,164 |
| 30 to 34 | 5194 | 5633 | 10,827 |
| 35 to 39 | 4549 | 5171 | 9,720 |
| 40 to 44 | 4768 | 5372 | 10,140 |
| 45 to 49 | 5254 | 5731 | 10,985 |
| 50 to 54 | 5716 | 6226 | 11,942 |
| 55 to 59 | 5180 | 5880 | 11,060 |
| 60 to 64 | 4318 | 5034 | 9,352 |
| 65 to 69 | 4185 | 4918 | 9,103 |
| 70 to 74 | 3128 | 3749 | 6,877 |
| 75 to 79 | 2128 | 2710 | 4,838 |
| 80 to 84 | 1433 | 1798 | 3,231 |
| 85+ | 973 | 1743 | 2,716 |
Kent 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 | 77039 | 83103 | 160,142 |
| WAC | 59783 | 62533 | 122,316 |
| WA | 57430 | 59997 | 117,427 |
| NHWAC | 55184 | 58001 | 113,185 |
| NHWA | 53145 | 55767 | 108,912 |
| BAC | 22279 | 25055 | 47,334 |
| NHBAC | 21019 | 23735 | 44,754 |
| BA | 20378 | 22919 | 43,297 |
| NHBA | 19371 | 21840 | 41,211 |
| H | 5906 | 5939 | 11,845 |
| HWAC | 4599 | 4532 | 9,131 |
| HWA | 4285 | 4230 | 8,515 |
| TOM | 2788 | 3102 | 5,890 |
| AAC | 2340 | 3011 | 5,351 |
| NHTOM | 2410 | 2734 | 5,144 |
| NHAAC | 2220 | 2887 | 5,107 |
| AA | 1657 | 2255 | 3,912 |
| NHAA | 1604 | 2191 | 3,795 |
| IAC | 1349 | 1594 | 2,943 |
| HBAC | 1260 | 1320 | 2,580 |
| NHIAC | 1037 | 1274 | 2,311 |
| HBA | 1007 | 1079 | 2,086 |
| IA | 598 | 668 | 1,266 |
| NHIA | 454 | 518 | 972 |
| HTOM | 378 | 368 | 746 |
| HIAC | 312 | 320 | 632 |
| NAC | 251 | 292 | 543 |
| NHNAC | 189 | 214 | 403 |
| HIA | 144 | 150 | 294 |
| HAAC | 120 | 124 | 244 |
| NA | 94 | 101 | 195 |
| HNAC | 62 | 78 | 140 |
| HAA | 53 | 64 | 117 |
| NHNA | 55 | 53 | 108 |
| HNA | 39 | 48 | 87 |
• New Castle County population
33.9 mi,
347°
• Sussex County
30.6 mi,
163°
• Cumberland County
25.9 mi,
51°
• Cecil County
39.8 mi,
323°
• Cape May County
35.1 mi,
91°
• Salem County
33.8 mi,
13°
• Queen Anne's County
31.3 mi,
262°
• Talbot County
43.6 mi,
236°
• Caroline County
23.5 mi,
228°
• Kent County
34.8 mi,
286°
[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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