Last official estimated population of Cleveland County was 256,844 (year 2014)[1]. This was 0.081% of total US population and 6.6% of total Oklahoma state population. Area of Cleveland County is 558.1 mi² (=1445.4 km²), in this year population density was 460.22 p/mi². If population growth rate would be same as in period 2010-2014 (+0.11%/yr), Cleveland County population in 2026 would be 260,139 [0].
Historical population of Cleveland County for period 1880-2014 [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

[1880-1890] +9.51 %/yr
[1890-1900] +1.2 %/yr
[1900-1910] +0.21 %/yr
[1910-1920] +0.29 %/yr
[1920-1930] +2.55 %/yr
[1930-1940] +1.06 %/yr
[1940-1950] +4.1 %/yr
[1950-1960] +1.39 %/yr
[1960-1970] +5.57 %/yr
[1970-1980] +4.99 %/yr
[1980-1990] +2.73 %/yr
[1990-2000] +1.79 %/yr
[2000-2005] +2 %/yr
[2005-2010] +2.17 %/yr
[2010-2014] +0.11 %/yr
Looking for settlements in Cleveland County? Visit this page: Settlements in Cleveland County, OK
Population of Cleveland County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 8161 | 7794 | 15,955 |
| 5 to 9 | 8809 | 8309 | 17,118 |
| 10 to 14 | 8750 | 8457 | 17,207 |
| 15 to 19 | 10115 | 9609 | 19,724 |
| 20 to 24 | 15693 | 15007 | 30,700 |
| 25 to 29 | 10493 | 9480 | 19,973 |
| 30 to 34 | 10627 | 9996 | 20,623 |
| 35 to 39 | 8868 | 8339 | 17,207 |
| 40 to 44 | 8356 | 8184 | 16,540 |
| 45 to 49 | 7696 | 7701 | 15,397 |
| 50 to 54 | 8508 | 8760 | 17,268 |
| 55 to 59 | 7816 | 8413 | 16,229 |
| 60 to 64 | 6549 | 7217 | 13,766 |
| 65 to 69 | 5353 | 5980 | 11,333 |
| 70 to 74 | 3507 | 4427 | 7,934 |
| 75 to 79 | 2480 | 2996 | 5,476 |
| 80 to 84 | 1543 | 2227 | 3,770 |
| 85+ | 1283 | 2405 | 3,688 |
Cleveland 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 | 123621 | 124849 | 248,470 |
| WAC | 114053 | 115902 | 229,955 |
| WA | 107166 | 108664 | 215,830 |
| NHWAC | 104420 | 106619 | 211,039 |
| NHWA | 98113 | 99997 | 198,110 |
| IAC | 11689 | 11823 | 23,512 |
| H | 10986 | 10452 | 21,438 |
| NHIAC | 10447 | 10707 | 21,154 |
| HWAC | 9633 | 9283 | 18,916 |
| HWA | 9053 | 8667 | 17,720 |
| BAC | 9092 | 8079 | 17,171 |
| NHBAC | 8612 | 7588 | 16,200 |
| TOM | 7259 | 7626 | 14,885 |
| AAC | 7183 | 7317 | 14,500 |
| NHAAC | 6954 | 7113 | 14,067 |
| IA | 6955 | 6787 | 13,742 |
| NHTOM | 6629 | 6964 | 13,593 |
| BA | 7179 | 6053 | 13,232 |
| NHBA | 6863 | 5740 | 12,603 |
| NHIA | 6176 | 6153 | 12,329 |
| AA | 5874 | 5997 | 11,871 |
| NHAA | 5725 | 5892 | 11,617 |
| HIAC | 1242 | 1116 | 2,358 |
| HIA | 779 | 634 | 1,413 |
| HTOM | 630 | 662 | 1,292 |
| HBAC | 480 | 491 | 971 |
| NAC | 347 | 326 | 673 |
| HBA | 316 | 313 | 629 |
| NHNAC | 260 | 228 | 488 |
| HAAC | 229 | 204 | 433 |
| NA | 174 | 174 | 348 |
| HAA | 149 | 105 | 254 |
| NHNA | 115 | 103 | 218 |
| HNAC | 87 | 98 | 185 |
| HNA | 59 | 71 | 130 |
• Oklahoma County population
24.5 mi,
348°
• Canadian County
43.7 mi,
302°
• Pottawatomie County
20.7 mi,
89°
• Grady County
34.3 mi,
248°
• Logan County
49.4 mi,
351°
• Pontotoc County
49 mi,
133°
• McClain County
15 mi,
208°
• Lincoln County
42.4 mi,
35°
• Garvin County
34.3 mi,
179°
• Seminole County
40.8 mi,
94°
[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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