Local Data Search
A total of 427 results found. Show Results on Map.
| Rank | Total Population ▼ | Census Block Group / Population |
| 1. | 6,327 | IL0770117002 / 6,327 |
| 2. | 3,503 | IL1450302003 / 3,503 |
| 3. | 2,882 | IL0810504003 / 2,882 |
| 4. | 2,475 | IL1599781002 / 2,475 |
| 5. | 2,428 | IL1990209003 / 2,428 |
| 6. | 2,412 | IL0279005001 / 2,412 |
| 7. | 2,374 | IL0499504001 / 2,374 |
| 8. | 2,285 | IL0259721003 / 2,285 |
| 9. | 2,271 | IL0550411002 / 2,271 |
| 10. | 2,197 | IL0810508003 / 2,197 |
| 11. | 2,163 | IL0770102003 / 2,163 |
| 12. | 2,021 | IL0770104001 / 2,021 |
| 13. | 1,993 | IL0550405001 / 1,993 |
| 14. | 1,977 | IL0519508003 / 1,977 |
| 15. | 1,884 | IL1990214003 / 1,884 |
| 15. | 1,884 | IL0499504002 / 1,884 |
| 17. | 1,836 | IL1450305002 / 1,836 |
| 18. | 1,833 | IL0550412003 / 1,833 |
| 19. | 1,831 | IL0770110001 / 1,831 |
| 20. | 1,828 | IL0770101002 / 1,828 |
| 21. | 1,803 | IL1990213002 / 1,803 |
| 22. | 1,782 | IL1990214001 / 1,782 |
| 23. | 1,778 | IL0259721001 / 1,778 |
| 24. | 1,777 | IL1990206003 / 1,777 |
| 25. | 1,775 | IL0259722002 / 1,775 |
| 26. | 1,774 | IL1990208001 / 1,774 |
| 27. | 1,766 | IL1990213001 / 1,766 |
| 28. | 1,761 | IL0770110002 / 1,761 |
| 29. | 1,722 | IL1990210001 / 1,722 |
| 30. | 1,708 | IL0770110003 / 1,708 |
| 31. | 1,662 | IL0279001004 / 1,662 |
| 32. | 1,658 | IL0499503004 / 1,658 |
| 33. | 1,643 | IL1219521003 / 1,643 |
| 34. | 1,640 | IL1990208003 / 1,640 |
| 35. | 1,635 | IL0279005003 / 1,635 |
| 36. | 1,634 | IL1990205003 / 1,634 |
| 37. | 1,632 | IL0059515003 / 1,632 |
| 38. | 1,626 | IL1990210004 / 1,626 |
| 39. | 1,617 | IL1990212001 / 1,617 |
| 40. | 1,602 | IL0279004026 / 1,602 |
| 41. | 1,539 | IL1219525004 / 1,539 |
| 42. | 1,527 | IL0279005004 / 1,527 |
| 43. | 1,522 | IL0279003002 / 1,522 |
| 43. | 1,522 | IL1599782001 / 1,522 |
| 45. | 1,503 | IL1219524001 / 1,503 |
| 46. | 1,494 | IL0259722001 / 1,494 |
| 47. | 1,488 | IL1990202022 / 1,488 |
| 48. | 1,485 | IL0279003005 / 1,485 |
| 49. | 1,484 | IL1659560003 / 1,484 |
| 50. | 1,477 | IL1599781001 / 1,477 |
| 51. | 1,464 | IL0259720002 / 1,464 |
| 52. | 1,462 | IL1990208005 / 1,462 |
| 53. | 1,461 | IL0810506001 / 1,461 |
| 54. | 1,453 | IL0810509002 / 1,453 |
| 55. | 1,447 | IL1990202015 / 1,447 |
| 56. | 1,446 | IL1659561003 / 1,446 |
| 56. | 1,446 | IL0279006025 / 1,446 |
| 58. | 1,439 | IL1939584001 / 1,439 |
| 59. | 1,433 | IL0550408001 / 1,433 |
| 60. | 1,429 | IL0279006021 / 1,429 |
| 61. | 1,426 | IL0810511003 / 1,426 |
| 62. | 1,417 | IL0259721002 / 1,417 |
| 62. | 1,417 | IL0479570002 / 1,417 |
| 64. | 1,406 | IL0550407005 / 1,406 |
| 65. | 1,395 | IL0770112001 / 1,395 |
| 66. | 1,380 | IL0810505003 / 1,380 |
| 67. | 1,377 | IL1990202012 / 1,377 |
| 68. | 1,374 | IL1450304001 / 1,374 |
| 69. | 1,368 | IL1219518003 / 1,368 |
| 70. | 1,367 | IL0770112004 / 1,367 |
| 71. | 1,362 | IL1990214002 / 1,362 |
| 72. | 1,359 | IL1219522004 / 1,359 |
| 73. | 1,358 | IL1990207004 / 1,358 |
| 74. | 1,354 | IL0770102002 / 1,354 |
| 75. | 1,330 | IL1659562003 / 1,330 |
| 76. | 1,328 | IL0550409003 / 1,328 |
| 77. | 1,327 | IL0810504001 / 1,327 |
| 78. | 1,318 | IL1450306003 / 1,318 |
| 79. | 1,309 | IL1990213003 / 1,309 |
| 80. | 1,308 | IL0659733001 / 1,308 |
| 81. | 1,300 | IL1219524002 / 1,300 |
| 82. | 1,299 | IL1219517001 / 1,299 |
| 83. | 1,298 | IL0770114003 / 1,298 |
| 84. | 1,295 | IL1219520004 / 1,295 |
| 84. | 1,295 | IL0599727001 / 1,295 |
| 86. | 1,294 | IL1990211002 / 1,294 |
| 87. | 1,289 | IL0279004011 / 1,289 |
| 88. | 1,282 | IL1990203004 / 1,282 |
| 89. | 1,276 | IL1990202021 / 1,276 |
| 90. | 1,272 | IL0279006012 / 1,272 |
| 91. | 1,270 | IL1599779002 / 1,270 |
| 92. | 1,265 | IL0499505003 / 1,265 |
| 93. | 1,264 | IL0550408002 / 1,264 |
| 94. | 1,263 | IL1919551001 / 1,263 |
| 95. | 1,258 | IL0810505001 / 1,258 |
| 96. | 1,256 | IL1990211003 / 1,256 |
| 97. | 1,253 | IL0550406001 / 1,253 |
| 98. | 1,244 | IL0810501004 / 1,244 |
| 99. | 1,230 | IL0550406002 / 1,230 |
| 100. | 1,217 | IL1990206001 / 1,217 |
| 100. | 1,217 | IL0770106004 / 1,217 |
| 100. | 1,217 | IL1659557003 / 1,217 |
| 103. | 1,206 | IL0810507004 / 1,206 |
| 104. | 1,202 | IL1659558003 / 1,202 |
| 105. | 1,200 | IL0810510001 / 1,200 |
| 106. | 1,197 | IL1939583002 / 1,197 |
| 107. | 1,192 | IL1219520001 / 1,192 |
| 108. | 1,188 | IL1990208002 / 1,188 |
| 109. | 1,186 | IL0519505002 / 1,186 |
| 110. | 1,183 | IL0279003006 / 1,183 |
| 110. | 1,183 | IL1939580003 / 1,183 |
| 112. | 1,182 | IL1599780001 / 1,182 |
| 112. | 1,182 | IL1919552002 / 1,182 |
| 114. | 1,176 | IL1990207001 / 1,176 |
| 115. | 1,165 | IL0810508001 / 1,165 |
| 116. | 1,160 | IL1219527001 / 1,160 |
| 117. | 1,154 | IL0810502002 / 1,154 |
| 118. | 1,153 | IL0259719001 / 1,153 |
| 119. | 1,152 | IL0770104003 / 1,152 |
| 120. | 1,151 | IL0810502001 / 1,151 |
| 121. | 1,146 | IL1219519001 / 1,146 |
| 122. | 1,144 | IL0279003003 / 1,144 |
| 123. | 1,140 | IL1659555003 / 1,140 |
| 124. | 1,137 | IL1990212002 / 1,137 |
| 125. | 1,136 | IL1219522002 / 1,136 |
| 126. | 1,125 | IL1659562001 / 1,125 |
| 127. | 1,123 | IL1219523003 / 1,123 |
| 128. | 1,122 | IL1659559003 / 1,122 |
| 129. | 1,120 | IL1599780002 / 1,120 |
| 129. | 1,120 | IL0810503001 / 1,120 |
| 131. | 1,113 | IL0550412001 / 1,113 |
| 132. | 1,111 | IL0550404003 / 1,111 |
| 133. | 1,108 | IL0550410001 / 1,108 |
| 134. | 1,107 | IL1939582002 / 1,107 |
| 134. | 1,107 | IL1990205001 / 1,107 |
| 134. | 1,107 | IL1919552003 / 1,107 |
| 137. | 1,105 | IL0810501001 / 1,105 |
| 138. | 1,103 | IL0279002002 / 1,103 |
| 139. | 1,101 | IL1219516002 / 1,101 |
| 140. | 1,099 | IL0770104002 / 1,099 |
| 141. | 1,096 | IL0550401002 / 1,096 |
| 141. | 1,096 | IL1219521002 / 1,096 |
| 141. | 1,096 | IL0519505003 / 1,096 |
| 144. | 1,093 | IL0519511002 / 1,093 |
| 145. | 1,091 | IL1219519002 / 1,091 |
| 146. | 1,087 | IL1990203001 / 1,087 |
| 147. | 1,081 | IL1919549003 / 1,081 |
| 148. | 1,078 | IL1939581002 / 1,078 |
| 149. | 1,077 | IL1990201001 / 1,077 |
| 150. | 1,075 | IL1919550005 / 1,075 |
| 151. | 1,072 | IL0550404004 / 1,072 |
| 152. | 1,069 | IL0519510002 / 1,069 |
| 152. | 1,069 | IL1990204003 / 1,069 |
| 154. | 1,067 | IL1899504003 / 1,067 |
| 155. | 1,065 | IL0550401001 / 1,065 |
| 156. | 1,062 | IL1939584002 / 1,062 |
| 157. | 1,059 | IL0659731003 / 1,059 |
| 158. | 1,058 | IL1990211001 / 1,058 |
| 159. | 1,056 | IL1990212004 / 1,056 |
| 159. | 1,056 | IL0810507001 / 1,056 |
| 161. | 1,054 | IL0550403003 / 1,054 |
| 161. | 1,054 | IL1599782002 / 1,054 |
| 163. | 1,053 | IL1450306002 / 1,053 |
| 164. | 1,052 | IL1599779004 / 1,052 |
| 165. | 1,047 | IL1659551001 / 1,047 |
| 166. | 1,044 | IL1859572003 / 1,044 |
| 167. | 1,041 | IL0279006011 / 1,041 |
| 167. | 1,041 | IL1919552001 / 1,041 |
| 169. | 1,039 | IL0279004021 / 1,039 |
| 170. | 1,030 | IL0810503005 / 1,030 |
| 171. | 1,021 | IL1899502002 / 1,021 |
| 172. | 1,018 | IL0810505002 / 1,018 |
| 173. | 1,017 | IL1219520002 / 1,017 |
| 173. | 1,017 | IL0519508002 / 1,017 |
| 175. | 1,015 | IL1219516004 / 1,015 |
| 176. | 1,013 | IL0810508002 / 1,013 |
| 177. | 1,012 | IL0259719002 / 1,012 |
| 178. | 999 | IL1450302002 / 999 |
| 179. | 996 | IL1990207003 / 996 |
| 180. | 989 | IL0770109001 / 989 |
| 180. | 989 | IL1939582001 / 989 |
| 182. | 988 | IL1599783002 / 988 |
| 183. | 985 | IL0770108003 / 985 |
| 184. | 984 | IN1290401001 / 984 |
| 185. | 981 | IL0770111004 / 981 |
| 186. | 974 | IL0550409002 / 974 |
| 187. | 973 | IL0770106001 / 973 |
| 188. | 971 | IL1599783004 / 971 |
| 189. | 969 | IL0550402002 / 969 |
| 190. | 967 | IL0519506003 / 967 |
| 191. | 957 | IL1990203003 / 957 |
| 192. | 956 | IL0770112002 / 956 |
| 193. | 952 | IL0770106005 / 952 |
| 194. | 947 | IL0770114002 / 947 |
| 195. | 945 | IL0550405002 / 945 |
| 196. | 942 | IL1990203002 / 942 |
| 197. | 940 | IL1990205002 / 940 |
| 198. | 939 | IL1899503002 / 939 |
| 198. | 939 | IL1990202013 / 939 |
| 200. | 938 | IL1919551002 / 938 |
| 200. | 938 | IL1450306004 / 938 |
| 202. | 937 | IL0550410002 / 937 |
| 203. | 934 | IL1919553003 / 934 |
| 204. | 932 | IL0810502003 / 932 |
| 205. | 931 | IL1450303003 / 931 |
| 206. | 929 | IL1219516003 / 929 |
| 207. | 926 | IL0810507003 / 926 |
| 208. | 923 | IL1990204004 / 923 |
| 209. | 922 | IL0810507002 / 922 |
| 210. | 920 | IL1659556003 / 920 |
| 210. | 920 | IL1919550001 / 920 |
| 212. | 917 | IL1990201002 / 917 |
| 213. | 914 | IL0659732002 / 914 |
| 214. | 910 | IL1219526003 / 910 |
| 215. | 907 | IL0550411001 / 907 |
| 216. | 903 | IL1450301001 / 903 |
| 217. | 900 | IL0770108001 / 900 |
| 217. | 900 | IL0659731004 / 900 |
| 217. | 900 | IL0479571003 / 900 |
| 220. | 899 | IL1990212003 / 899 |
| 221. | 893 | IL1990208004 / 893 |
| 222. | 887 | IL1919549002 / 887 |
| 222. | 887 | IL0810509001 / 887 |
| 224. | 886 | IL0550401003 / 886 |
| 225. | 882 | IL1450302006 / 882 |
| 226. | 881 | IL1659556002 / 881 |
| 227. | 879 | IL1579505001 / 879 |
| 228. | 878 | IL1899504004 / 878 |
| 228. | 878 | IL1899501004 / 878 |
| 230. | 875 | IL1659551003 / 875 |
| 231. | 873 | IL1219527005 / 873 |
| 231. | 873 | IL1450302004 / 873 |
| 231. | 873 | IL1919551003 / 873 |
| 234. | 872 | IL1219524003 / 872 |
| 235. | 870 | IL1219519003 / 870 |
| 236. | 869 | IL1899502005 / 869 |
| 236. | 869 | IL0059512003 / 869 |
| 236. | 869 | IL0279005002 / 869 |
| 239. | 868 | IL1659560002 / 868 |
| 240. | 864 | IL1919549001 / 864 |
| 240. | 864 | IL0770117003 / 864 |
| 242. | 861 | IL1939582003 / 861 |
| 243. | 860 | IL1990209002 / 860 |
| 244. | 858 | IL0810501003 / 858 |
| 244. | 858 | IL1219522003 / 858 |
| 246. | 854 | IL1450302005 / 854 |
| 247. | 852 | IL0550407004 / 852 |
| 248. | 851 | IL0519511004 / 851 |
| 249. | 849 | IL0810511002 / 849 |
| 250. | 848 | IL1659558004 / 848 |
| 250. | 848 | IL1219527003 / 848 |
| 252. | 844 | IL0279002001 / 844 |
| 252. | 844 | IL1990202011 / 844 |
| 254. | 843 | IL0519509001 / 843 |
| 255. | 842 | IL1990201003 / 842 |
| 256. | 841 | IL0770101003 / 841 |
| 256. | 841 | IL1899503004 / 841 |
| 258. | 839 | IL0259720003 / 839 |
| 259. | 833 | IL0550403002 / 833 |
| 260. | 830 | IL0770108005 / 830 |
| 260. | 830 | IL0770114001 / 830 |
| 262. | 829 | IL1990210002 / 829 |
| 263. | 826 | IL1899503001 / 826 |
| 264. | 824 | IL0279003004 / 824 |
| 265. | 818 | IL0519508001 / 818 |
| 265. | 818 | IL1939581001 / 818 |
| 267. | 817 | IL0659732001 / 817 |
| 268. | 815 | IL1990204001 / 815 |
| 269. | 811 | IL1659561001 / 811 |
| 269. | 811 | IL0659733003 / 811 |
| 271. | 810 | IL0279004022 / 810 |
| 272. | 809 | IL0550407002 / 809 |
| 272. | 809 | IL1899503003 / 809 |
| 274. | 807 | IL1899504005 / 807 |
| 275. | 806 | IL0810503002 / 806 |
| 276. | 804 | IL1659559001 / 804 |
| 277. | 803 | IL1919550002 / 803 |
| 277. | 803 | IL0479569001 / 803 |
| 277. | 803 | IL0659732003 / 803 |
| 280. | 801 | IL0810501002 / 801 |
| 281. | 799 | IL0659731001 / 799 |
| 282. | 794 | IL0810504002 / 794 |
| 283. | 792 | IL1450303001 / 792 |
| 284. | 790 | IL1450301003 / 790 |
| 285. | 787 | IL0810503003 / 787 |
| 285. | 787 | IL0479570001 / 787 |
| 287. | 786 | IL1219517003 / 786 |
| 288. | 785 | IL0279006022 / 785 |
| 289. | 783 | IL0770107005 / 783 |
| 290. | 781 | IL1659557001 / 781 |
| 291. | 780 | IL1939583001 / 780 |
| 292. | 779 | IL1579505002 / 779 |
| 293. | 776 | IL1579507001 / 776 |
| 293. | 776 | IL1939581003 / 776 |
| 295. | 775 | IL0770107002 / 775 |
| 296. | 770 | IL1450305001 / 770 |
| 297. | 769 | IL0599727003 / 769 |
| 298. | 766 | IL1939584003 / 766 |
| 299. | 765 | IL1219522001 / 765 |
| 300. | 764 | IL0659733002 / 764 |
| 301. | 762 | IL0059515004 / 762 |
| 302. | 761 | IL0799775002 / 761 |
| 303. | 760 | IL0550402003 / 760 |
| 303. | 760 | IL0770110004 / 760 |
| 305. | 759 | IL0479569002 / 759 |
| 306. | 757 | IL0279004024 / 757 |
| 306. | 757 | IL1899501003 / 757 |
| 308. | 753 | IL1219523004 / 753 |
| 309. | 752 | IL0770109003 / 752 |
| 310. | 750 | IL1599783003 / 750 |
| 311. | 748 | IL1450306001 / 748 |
| 312. | 746 | IL1219523002 / 746 |
| 313. | 745 | IL1219526002 / 745 |
| 314. | 743 | IL0770106002 / 743 |
| 314. | 743 | IL0550409001 / 743 |
| 316. | 741 | IL1899502004 / 741 |
| 316. | 741 | IL0770111003 / 741 |
| 318. | 740 | IL1659557002 / 740 |
| 318. | 740 | IL1990206002 / 740 |
| 318. | 740 | IL0519511001 / 740 |
| 321. | 739 | IL1990204002 / 739 |
| 322. | 737 | IL0479571002 / 737 |
| 322. | 737 | IL1659560001 / 737 |
| 324. | 736 | IL1659558002 / 736 |
| 325. | 734 | IL1450301004 / 734 |
| 326. | 731 | IL1219521001 / 731 |
| 327. | 729 | IL1939581004 / 729 |
| 328. | 725 | IL0550412002 / 725 |
| 329. | 723 | IL1450301002 / 723 |
| 330. | 722 | IL1899504001 / 722 |
| 331. | 721 | IL1919550003 / 721 |
| 331. | 721 | IL0770109002 / 721 |
| 333. | 719 | IL1659551002 / 719 |
| 334. | 717 | IL0770112005 / 717 |
| 334. | 717 | IL1919553001 / 717 |
| 336. | 716 | IL1219523001 / 716 |
| 337. | 715 | IL1919553002 / 715 |
| 338. | 712 | IL0519511003 / 712 |
| 339. | 710 | IL0259720001 / 710 |
| 339. | 710 | IL0770107003 / 710 |
| 341. | 709 | IL1990207005 / 709 |
| 342. | 703 | IL1219517002 / 703 |
| 343. | 701 | IL1219520003 / 701 |
| 344. | 699 | IL0279004025 / 699 |
| 345. | 697 | IL1450304002 / 697 |
| 346. | 692 | IL1899502001 / 692 |
| 346. | 692 | IL1939580002 / 692 |
| 348. | 685 | IL1899504002 / 685 |
| 349. | 684 | IL1990202014 / 684 |
| 350. | 682 | IL1939583003 / 682 |
| 351. | 676 | IL0519510003 / 676 |
| 352. | 670 | IL0519509003 / 670 |
| 353. | 669 | IL0479571001 / 669 |
| 354. | 666 | IL0599727002 / 666 |
| 355. | 665 | IL0279003001 / 665 |
| 356. | 664 | IL0770111001 / 664 |
| 356. | 664 | IL0550404001 / 664 |
| 358. | 663 | IL1450304003 / 663 |
| 358. | 663 | IL0550403004 / 663 |
| 358. | 663 | IL1919550004 / 663 |
| 361. | 659 | IL1659556001 / 659 |
| 361. | 659 | IL0550402001 / 659 |
| 363. | 656 | IL0550407003 / 656 |
| 364. | 655 | IL1599779003 / 655 |
| 365. | 649 | IN1290402001 / 649 |
| 366. | 648 | IL0810503004 / 648 |
| 367. | 644 | IL0550406003 / 644 |
| 368. | 641 | IL1939580001 / 641 |
| 369. | 638 | IL1899501002 / 638 |
| 370. | 637 | IL1899501001 / 637 |
| 371. | 635 | IL0479569003 / 635 |
| 372. | 624 | IL0550407001 / 624 |
| 373. | 621 | IL0770107004 / 621 |
| 374. | 618 | IL0279004023 / 618 |
| 375. | 616 | IL0810506003 / 616 |
| 376. | 613 | IL1990210003 / 613 |
| 377. | 607 | IL0519510001 / 607 |
| 378. | 603 | IL0810506002 / 603 |
| 379. | 600 | IL0770111002 / 600 |
| 379. | 600 | IL1219525002 / 600 |
| 381. | 592 | IL1219518002 / 592 |
| 382. | 583 | IL0810506004 / 583 |
| 383. | 581 | IL1219518001 / 581 |
| 384. | 579 | IL1990209001 / 579 |
| 385. | 577 | IL1859572005 / 577 |
| 386. | 574 | IL1659555001 / 574 |
| 386. | 574 | IL0519509002 / 574 |
| 388. | 570 | IL0770108004 / 570 |
| 389. | 569 | IL1659559002 / 569 |
| 390. | 565 | IL0770102001 / 565 |
| 391. | 560 | IL1450302001 / 560 |
| 392. | 558 | IL0550404002 / 558 |
| 393. | 553 | IL1859572004 / 553 |
| 394. | 549 | IL0550402004 / 549 |
| 394. | 549 | IL1659555002 / 549 |
| 396. | 548 | IL1219525001 / 548 |
| 397. | 547 | IL1450303002 / 547 |
| 398. | 544 | IL0550411003 / 544 |
| 398. | 544 | IL1919553004 / 544 |
| 400. | 541 | IL0550410003 / 541 |
| 401. | 536 | IL1219527002 / 536 |
| 402. | 533 | IL0279005005 / 533 |
| 403. | 521 | IL1659561002 / 521 |
| 403. | 521 | IL1659562004 / 521 |
| 405. | 519 | IL1990207002 / 519 |
| 406. | 518 | IL1899502003 / 518 |
| 406. | 518 | IL1919549004 / 518 |
| 408. | 516 | IL1899501005 / 516 |
| 409. | 513 | IL0550404005 / 513 |
| 410. | 507 | IL1219525003 / 507 |
| 411. | 500 | IL1219527004 / 500 |
| 412. | 496 | IL1659562002 / 496 |
| 413. | 495 | IL0770110005 / 495 |
| 414. | 490 | IL0810511001 / 490 |
| 415. | 489 | IL0770112003 / 489 |
| 416. | 488 | IL0550403001 / 488 |
| 417. | 472 | IL0810504004 / 472 |
| 418. | 455 | IL0550408003 / 455 |
| 419. | 454 | IL1990201004 / 454 |
| 420. | 449 | IL1659558001 / 449 |
| 421. | 443 | IL0770107001 / 443 |
| 422. | 437 | IL0770108002 / 437 |
| 423. | 410 | IL1990207006 / 410 |
| 424. | 386 | IL1219516001 / 386 |
| 425. | 382 | IL0810509003 / 382 |
| 426. | 283 | IL1219526001 / 283 |
| 427. | 278 | IL0659731002 / 278 |
Please note that we only rank locations with 'Total Population' data. The rank above might not be a complete list. Locations without 'Total Population' data are not listed.
*ACS stands for U.S. Census American Community Survey. According to the U.S. Census, if the date is a range, you can interpret the data as an average of the period of time.