Population in Selected Age Groups

Source:	Population Estimates Program, U.S. Census Bureau
Units:	Number of residents by age in years, as of July 1, 2016
Additional data:	Download more detailed age group estimates in Excel
	Download population counts by 5-year age group and sex from the 2010 Census

FIPS	Area Name	Total, all ages	Under 5 years	5 to 13 years	14 to 17 years	18 to 24 years	25 to 44 years	45 to 64 years	65 years or older
19000	State of Iowa	3,134,693	199,415	367,581	163,735	322,097	761,908	805,742	514,215
19001	Adair	7,092	364	779	370	452	1,479	2,030	1,618
19003	Adams	3,693	245	398	166	237	766	1,070	811
19005	Allamakee	13,884	885	1,597	659	985	2,754	3,898	3,106
19007	Appanoose	12,462	746	1,397	624	868	2,618	3,481	2,728
19009	Audubon	5,678	302	574	260	423	1,045	1,672	1,402
19011	Benton	25,699	1,492	3,115	1,454	1,971	5,648	7,468	4,551
19013	Black Hawk	132,904	8,587	14,158	5,932	20,607	31,788	31,169	20,663
19015	Boone	26,532	1,460	2,862	1,505	1,987	6,483	7,591	4,644
19017	Bremer	24,798	1,420	2,809	1,247	2,959	5,487	6,122	4,754
19019	Buchanan	20,992	1,458	2,782	1,314	1,509	4,862	5,477	3,590
19021	Buena Vista	20,332	1,571	2,539	1,047	2,469	4,630	4,955	3,121
19023	Butler	14,791	802	1,816	778	966	3,201	3,971	3,257
19025	Calhoun	9,846	607	1,028	458	791	2,081	2,678	2,203
19027	Carroll	20,437	1,372	2,485	1,084	1,605	4,290	5,581	4,020
19029	Cass	13,157	745	1,586	675	906	2,797	3,565	2,883
19031	Cedar	18,454	946	2,155	1,042	1,304	4,167	5,355	3,485
19033	Cerro Gordo	43,070	2,415	4,544	2,028	3,444	9,519	12,228	8,892
19035	Cherokee	11,508	674	1,187	540	759	2,300	3,300	2,748
19037	Chickasaw	12,023	714	1,453	666	906	2,462	3,442	2,380
19039	Clarke	9,309	659	1,198	496	684	2,087	2,445	1,740
19041	Clay	16,333	1,027	1,855	830	1,222	3,733	4,417	3,249
19043	Clayton	17,590	998	1,937	907	1,225	3,447	5,217	3,859
19045	Clinton	47,309	2,834	5,445	2,575	3,697	10,395	13,356	9,007
19047	Crawford	16,940	1,184	2,135	974	1,580	3,879	4,297	2,891
19049	Dallas	84,516	6,815	12,110	4,878	5,727	25,557	19,417	10,012
19051	Davis	8,860	745	1,276	535	701	1,904	2,162	1,537
19053	Decatur	8,141	497	886	387	1,454	1,489	1,890	1,538
19055	Delaware	17,327	1,080	2,087	951	1,353	3,520	5,085	3,251
19057	Des Moines	39,739	2,387	4,583	2,031	2,939	9,159	10,738	7,902
19059	Dickinson	17,243	860	1,673	799	1,089	3,544	4,969	4,309
19061	Dubuque	97,003	6,135	11,059	5,101	9,899	22,857	25,501	16,451
19063	Emmet	9,658	532	1,012	538	840	2,104	2,605	2,027
19065	Fayette	20,054	1,055	2,174	975	1,996	4,081	5,572	4,201
19067	Floyd	15,873	936	1,819	891	1,246	3,306	4,269	3,406
19069	Franklin	10,170	579	1,223	548	766	2,103	2,863	2,088
19071	Fremont	6,950	368	807	361	487	1,404	2,014	1,509
19073	Greene	9,011	512	1,025	521	651	1,802	2,554	1,946
19075	Grundy	12,313	669	1,504	712	831	2,756	3,328	2,513
19077	Guthrie	10,625	598	1,211	598	743	2,103	3,071	2,301
19079	Hamilton	15,076	953	1,764	777	1,064	3,323	4,181	3,014
19081	Hancock	10,835	576	1,247	604	798	2,258	3,073	2,279
19083	Hardin	17,226	914	1,682	975	1,516	3,681	4,798	3,660
19085	Harrison	14,149	811	1,620	789	1,015	3,001	4,084	2,829
19087	Henry	19,773	1,114	2,184	1,037	1,814	4,640	5,249	3,735
19089	Howard	9,332	613	1,205	493	637	1,984	2,492	1,908
19091	Humboldt	9,487	553	1,164	472	660	2,041	2,642	1,955
19093	Ida	6,985	391	890	362	511	1,435	1,840	1,556
19095	Iowa	16,311	995	1,919	845	1,232	3,535	4,727	3,058
19097	Jackson	19,472	1,084	2,157	1,065	1,476	3,951	5,745	3,994
19099	Jasper	36,708	2,147	4,088	1,939	2,725	8,747	10,269	6,793
19101	Jefferson	18,090	775	1,426	685	2,359	4,420	4,714	3,711
19103	Johnson	146,547	8,868	14,555	6,091	31,023	40,352	29,847	15,811
19105	Jones	20,439	1,100	2,326	1,038	1,441	4,767	5,815	3,952
19107	Keokuk	10,119	636	1,142	564	742	2,123	2,838	2,074
19109	Kossuth	15,114	854	1,705	771	1,162	2,948	4,247	3,427
19111	Lee	34,615	2,088	3,586	1,702	2,681	7,883	9,872	6,803
19113	Linn	221,661	14,380	26,072	12,161	20,430	58,422	57,117	33,079
19115	Louisa	11,142	701	1,230	625	912	2,612	3,159	1,903
19117	Lucas	8,647	483	994	492	670	1,681	2,474	1,853
19119	Lyon	11,754	847	1,760	726	860	2,672	2,852	2,037
19121	Madison	15,848	926	2,090	986	1,103	3,535	4,537	2,671
19123	Mahaska	22,181	1,431	2,670	1,235	2,060	5,138	5,777	3,870
19125	Marion	33,189	1,960	4,131	1,904	3,550	7,313	8,634	5,697
19127	Marshall	40,312	2,764	5,209	2,163	3,477	9,020	10,378	7,301
19129	Mills	14,972	876	1,823	876	1,087	3,233	4,554	2,523
19131	Mitchell	10,763	647	1,292	639	804	2,118	2,929	2,334
19133	Monona	8,898	459	956	469	677	1,678	2,428	2,231
19135	Monroe	7,870	436	995	415	594	1,692	2,199	1,539
19137	Montgomery	10,225	603	1,123	572	751	2,049	2,935	2,192
19139	Muscatine	42,940	2,827	5,557	2,531	3,571	10,352	11,247	6,855
19141	O'Brien	14,020	839	1,696	762	1,057	2,992	3,785	2,889
19143	Osceola	6,064	397	737	294	425	1,213	1,746	1,252
19145	Page	15,391	808	1,456	811	1,195	3,651	4,211	3,259
19147	Palo Alto	9,047	530	1,081	456	738	1,944	2,332	1,966
19149	Plymouth	25,200	1,624	3,203	1,427	2,020	5,473	6,872	4,581
19151	Pocahontas	6,886	391	801	374	483	1,276	1,982	1,579
19153	Polk	474,045	34,861	59,677	24,914	41,546	137,603	117,134	58,310
19155	Pottawattamie	93,582	5,933	11,220	4,996	8,221	22,605	25,328	15,279
19157	Poweshiek	18,533	921	1,917	894	2,685	3,626	4,752	3,738
19159	Ringgold	5,068	276	611	309	331	995	1,291	1,255
19161	Sac	9,876	598	1,137	481	672	1,898	2,850	2,240
19163	Scott	172,474	11,321	20,923	9,108	14,525	44,992	45,389	26,216
19165	Shelby	11,800	645	1,348	646	876	2,169	3,476	2,640
19167	Sioux	34,898	2,548	4,881	2,028	4,761	7,625	7,792	5,263
19169	Story	97,090	4,449	8,096	3,699	30,841	21,724	17,460	10,821
19171	Tama	17,319	1,124	2,041	1,007	1,335	3,540	4,871	3,401
19173	Taylor	6,216	411	726	325	445	1,355	1,622	1,332
19175	Union	12,420	676	1,477	640	1,141	2,764	3,247	2,475
19177	Van Buren	7,271	442	837	408	486	1,485	2,084	1,529
19179	Wapello	34,982	2,125	4,014	1,713	3,226	8,531	9,372	6,001
19181	Warren	49,691	3,024	6,332	3,024	4,741	11,757	13,065	7,748
19183	Washington	22,281	1,602	2,697	1,290	1,662	4,911	5,901	4,218
19185	Wayne	6,452	433	828	362	474	1,310	1,663	1,382
19187	Webster	36,769	2,157	3,893	1,850	4,277	8,365	9,699	6,528
19189	Winnebago	10,631	615	1,178	541	1,031	2,184	2,885	2,197
19191	Winneshiek	20,561	873	1,992	904	3,409	3,892	5,551	3,940
19193	Woodbury	102,779	7,531	13,622	5,892	10,298	25,633	25,224	14,579
19195	Worth	7,572	407	781	383	636	1,590	2,235	1,540
19197	Wright	12,779	767	1,534	737	880	2,594	3,447	2,820

Notes:

The resident population includes all persons who are "usually resident" in a specified geographic area. It excludes U.S. Armed Forces overseas and civilian U.S. citizens whose usual place of residence is outside the United States.
Last Census Bureau update: June, 2017