FIPS	Geography	Total households 1990	1990 Household Income Level							Median income 1990	Total households 2000	2000 Household Income Level
			< $15k	$15k..24.9k	$25k..$34.9k	$35k..$44.9k	$45k..$59.9k	$60k..$99.9k	$100k or more			< $15k	$15k..24.9k	$25k..$34.9k	$35k..$44.9k	$45k..$59.9k	$60k..$99.9k	$100k or more	Median income 2000
19000	State of Iowa	1,065,243	284,659	221,213	194,997	142,162	119,777	80,157	22,278	26,229	1,150,197	171,116	165,122	168,713	152,691	183,135	225,687	83,733	39,469
19001	Adair County, Iowa	3,418	1,128	854	631	405	265	95	40	21,426	3,398	505	613	571	493	573	521	122	35,179
19003	Adams County, Iowa	2,020	759	481	395	224	75	56	30	20,570	1,863	347	394	316	197	343	209	57	30,453
19005	Allamakee County, Iowa	5,291	1,851	1,228	859	615	405	244	89	21,098	5,730	920	999	1,041	864	858	823	225	33,967
19007	Appanoose County, Iowa	5,663	2,427	1,187	818	523	399	253	56	17,833	5,792	1,420	1,086	1,044	790	733	575	144	28,612
19009	Audubon County, Iowa	2,949	977	750	548	300	171	157	46	21,501	2,767	502	474	519	420	400	315	137	32,215
19011	Benton County, Iowa	8,541	2,336	1,798	1,528	1,247	1,024	528	80	25,959	9,782	1,288	1,179	1,388	1,381	1,710	2,371	465	42,427
19013	Black Hawk County, Iowa	47,162	13,906	9,103	7,400	5,789	5,915	4,110	939	25,683	49,736	8,482	7,193	7,588	6,356	7,202	9,401	3,514	37,266
19015	Boone County, Iowa	9,812	2,644	2,052	1,829	1,409	1,154	576	148	26,110	10,415	1,430	1,367	1,556	1,455	1,833	2,149	625	40,763
19017	Bremer County, Iowa	8,413	2,215	1,596	1,646	1,177	1,030	632	117	27,326	8,834	1,044	1,279	1,357	1,146	1,504	1,907	597	40,826
19019	Buchanan County, Iowa	7,564	2,390	1,647	1,237	996	682	509	103	23,386	7,923	1,210	1,183	1,208	1,113	1,364	1,411	434	38,036
19021	Buena Vista County, Iowa	7,530	1,910	1,784	1,645	1,032	651	376	132	25,311	7,514	1,233	1,362	1,130	1,136	1,049	1,227	377	35,300
19023	Butler County, Iowa	6,047	1,812	1,424	1,164	771	491	310	75	23,292	6,139	1,017	940	1,014	925	956	1,042	245	35,883
19025	Calhoun County, Iowa	4,667	1,474	1,114	920	463	387	232	77	22,496	4,496	878	793	686	613	749	555	222	33,286
19027	Carroll County, Iowa	8,021	2,377	1,750	1,620	1,013	741	374	146	24,391	8,480	1,385	1,217	1,426	1,021	1,411	1,528	492	37,275
19029	Cass County, Iowa	6,172	1,942	1,581	1,067	733	470	294	85	21,801	6,115	1,073	1,068	1,111	926	909	751	277	32,922
19031	Cedar County, Iowa	6,769	1,671	1,319	1,390	1,037	816	429	107	27,713	7,159	909	852	1,037	1,041	1,371	1,586	363	42,198
19033	Cerro Gordo County, Iowa	19,044	5,134	4,344	3,555	2,622	1,897	1,182	310	25,116	19,354	3,326	3,482	2,636	2,387	3,074	3,298	1,151	35,867
19035	Cherokee County, Iowa	5,589	1,714	1,335	1,146	554	483	279	78	22,967	5,377	845	973	854	816	850	826	213	35,142
19037	Chickasaw County, Iowa	5,038	1,365	1,187	1,106	616	424	293	47	24,656	5,188	807	703	846	811	987	830	204	37,649
19039	Clarke County, Iowa	3,347	1,085	799	598	288	326	187	64	21,735	3,588	579	706	533	433	572	608	157	34,474
19041	Clay County, Iowa	7,009	2,048	1,452	1,410	1,003	641	303	152	25,028	7,274	1,243	1,174	1,128	1,162	1,054	1,096	417	35,799
19043	Clayton County, Iowa	7,206	2,354	1,924	1,159	840	585	265	79	21,406	7,381	1,197	1,305	1,291	1,135	1,190	978	285	34,068
19045	Clinton County, Iowa	19,869	5,527	4,264	3,357	2,868	2,374	1,281	198	25,410	20,156	3,410	2,993	2,947	2,626	3,485	3,875	820	37,423
19047	Crawford County, Iowa	6,397	2,025	1,626	1,259	669	509	269	40	22,209	6,458	1,145	1,074	1,132	1,002	935	967	203	33,922
19049	Dallas County, Iowa	11,182	2,596	2,207	1,903	1,744	1,376	1,113	243	28,874	15,592	1,570	1,826	2,034	1,771	2,350	4,001	2,040	48,528
19051	Davis County, Iowa	3,135	1,090	849	578	272	222	113	11	20,054	3,205	607	604	459	389	556	485	105	32,864
19053	Decatur County, Iowa	3,228	1,367	773	469	322	167	113	17	18,105	3,352	903	594	602	400	403	332	118	27,343
19055	Delaware County, Iowa	6,360	1,750	1,302	1,280	910	595	358	165	25,757	6,861	1,002	1,135	1,055	934	1,104	1,251	380	37,168
19057	Des Moines County, Iowa	16,933	4,606	3,374	3,116	2,419	2,051	1,145	222	26,536	17,293	2,734	2,802	2,587	2,293	2,848	3,087	942	36,790
19059	Dickinson County, Iowa	6,161	1,590	1,459	1,212	756	511	416	217	25,211	7,094	985	1,055	1,060	997	1,207	1,254	536	39,020
19061	Dubuque County, Iowa	30,689	7,352	6,033	5,797	4,302	3,952	2,505	748	28,276	33,703	4,394	5,051	5,035	4,759	5,482	6,551	2,431	39,582
19063	Emmet County, Iowa	4,477	1,433	1,084	878	442	368	224	48	22,790	4,446	691	801	830	611	680	634	199	33,305
19065	Fayette County, Iowa	8,499	2,970	1,921	1,515	1,024	625	317	127	21,109	8,833	1,740	1,600	1,372	1,332	1,245	1,212	332	32,453
19067	Floyd County, Iowa	6,713	2,119	1,476	1,321	791	581	312	113	23,344	6,807	1,222	1,223	930	1,011	1,127	1,040	254	35,237
19069	Franklin County, Iowa	4,581	1,440	993	954	480	392	262	60	23,741	4,370	677	707	751	528	706	779	222	36,042
19071	Fremont County, Iowa	3,202	1,021	713	627	446	254	103	38	22,948	3,208	575	469	445	365	676	526	152	38,345
19073	Greene County, Iowa	4,226	1,284	1,086	847	485	299	183	42	22,320	4,202	806	696	662	577	653	670	138	33,883
19075	Grundy County, Iowa	4,790	1,211	1,050	992	683	480	303	71	26,314	4,964	586	685	794	782	894	955	268	39,396
19077	Guthrie County, Iowa	4,454	1,344	1,075	869	520	347	246	53	23,356	4,656	731	784	691	636	716	792	306	36,495
19079	Hamilton County, Iowa	6,407	1,667	1,423	1,250	1,104	556	329	78	25,847	6,689	960	984	1,014	1,007	1,106	1,291	327	38,658
19081	Hancock County, Iowa	4,844	1,192	1,172	1,145	676	443	150	66	25,445	4,792	564	751	837	811	837	778	214	37,703
19083	Hardin County, Iowa	7,602	2,245	1,830	1,503	853	696	370	105	23,457	7,636	1,168	1,306	1,287	1,198	1,117	1,242	318	35,429
19085	Harrison County, Iowa	5,630	1,885	1,237	1,062	613	466	313	54	22,258	6,104	952	913	921	891	1,030	1,115	282	38,141
19087	Henry County, Iowa	7,092	1,925	1,629	1,316	1,060	747	298	117	24,952	7,627	1,282	1,038	1,065	1,066	1,344	1,400	432	39,087
19089	Howard County, Iowa	3,805	1,274	925	755	450	229	108	64	21,913	3,982	701	647	665	552	670	558	189	34,641
19091	Humboldt County, Iowa	4,360	1,170	1,049	952	535	320	244	90	24,557	4,305	657	653	650	607	765	728	245	38,201
19093	Ida County, Iowa	3,230	1,006	770	588	353	303	148	62	22,859	3,197	599	480	528	479	504	459	148	34,805
19095	Iowa County, Iowa	5,703	1,414	1,248	1,158	877	574	342	90	26,579	6,186	748	863	954	889	1,186	1,294	252	41,222
19097	Jackson County, Iowa	7,535	2,464	1,662	1,403	812	731	394	69	22,487	8,096	1,432	1,373	1,309	1,070	1,308	1,305	299	34,529
19099	Jasper County, Iowa	13,667	3,086	2,680	2,751	2,094	1,842	997	217	28,702	14,694	1,926	2,004	2,150	1,944	2,489	3,257	924	41,683
19101	Jefferson County, Iowa	6,277	2,001	1,366	1,107	858	516	306	123	22,630	6,651	1,211	1,081	1,125	812	752	1,125	545	33,851
19103	Johnson County, Iowa	36,118	9,634	6,559	5,707	4,222	4,501	3,828	1,667	27,862	44,074	7,677	5,931	5,602	4,916	5,617	9,094	5,237	40,060
19105	Jones County, Iowa	6,847	1,859	1,644	1,363	899	586	410	86	24,480	7,577	1,194	1,019	1,263	1,064	1,286	1,400	351	37,449
19107	Keokuk County, Iowa	4,592	1,403	1,147	915	553	346	185	43	22,234	4,574	822	831	680	624	827	604	186	34,025
19109	Kossuth County, Iowa	7,256	2,126	1,776	1,570	823	518	334	109	23,321	6,959	1,252	1,107	1,165	1,008	1,066	1,036	325	34,562
19111	Lee County, Iowa	14,942	4,513	3,055	2,546	1,962	1,751	910	205	24,671	15,186	2,525	2,298	2,468	2,186	2,264	2,624	821	36,193
19113	Linn County, Iowa	65,242	13,171	11,253	11,469	10,118	10,267	7,103	1,861	32,137	76,806	8,346	9,255	9,911	9,636	12,732	19,106	7,820	46,206
19115	Louisa County, Iowa	4,336	1,201	904	863	603	458	252	55	25,590	4,526	604	705	714	607	835	847	214	39,086
19117	Lucas County, Iowa	3,755	1,339	787	648	452	326	151	52	21,316	3,776	908	589	626	480	600	467	106	30,876
19119	Lyon County, Iowa	4,330	1,331	1,032	942	472	281	228	44	22,676	4,395	631	627	784	623	849	689	192	36,878
19121	Madison County, Iowa	4,792	1,287	913	1,027	680	504	325	56	26,644	5,315	811	621	764	675	907	1,130	407	41,845
19123	Mahaska County, Iowa	8,342	2,589	1,867	1,650	1,011	712	398	115	23,115	8,881	1,520	1,184	1,381	1,338	1,527	1,511	420	37,314
19125	Marion County, Iowa	10,811	2,486	2,137	2,461	1,449	1,393	667	218	27,991	12,055	1,770	1,427	1,538	1,667	2,070	2,814	769	42,401
19127	Marshall County, Iowa	14,933	3,503	3,030	2,666	2,203	2,087	1,192	252	28,333	15,323	2,227	2,226	2,431	2,068	2,526	2,998	847	38,268
19129	Mills County, Iowa	4,693	1,119	1,032	809	756	572	360	45	27,420	5,336	656	778	770	625	926	1,153	428	42,428
19131	Mitchell County, Iowa	4,242	1,235	932	880	580	360	227	28	24,519	4,317	740	719	708	691	569	740	150	34,843
19133	Monona County, Iowa	4,123	1,493	1,025	730	410	266	110	89	20,714	4,206	926	640	645	639	630	556	170	33,235
19135	Monroe County, Iowa	3,180	1,149	776	551	278	218	172	36	20,745	3,222	640	450	527	523	455	490	137	34,877
19137	Montgomery County, Iowa	4,979	1,553	1,110	960	686	370	232	68	23,312	4,892	932	881	793	753	644	693	196	33,214
19139	Muscatine County, Iowa	14,734	3,461	2,669	2,724	2,401	1,955	1,255	269	29,786	15,883	2,114	2,257	2,246	1,947	2,605	3,559	1,155	41,803
19141	O'Brien County, Iowa	5,990	1,758	1,495	1,111	792	455	318	61	23,125	5,997	871	1,001	1,037	968	1,025	871	224	35,758
19143	Osceola County, Iowa	2,836	872	685	477	362	219	170	51	23,037	2,778	505	456	464	371	464	384	134	34,274
19145	Page County, Iowa	6,720	2,256	1,509	1,168	749	629	319	90	22,050	6,709	1,306	1,010	977	981	1,066	1,064	305	35,466
19147	Palo Alto County, Iowa	4,226	1,407	1,093	763	453	271	184	55	21,223	4,119	753	709	740	535	671	515	196	32,409
19149	Plymouth County, Iowa	8,407	2,122	1,700	1,718	1,207	920	573	167	26,796	9,385	1,145	1,305	1,372	1,208	1,658	1,979	718	41,638
19151	Pocahontas County, Iowa	3,866	1,155	915	734	514	311	189	48	23,517	3,623	710	598	607	478	593	466	171	33,362
19153	Polk County, Iowa	129,318	26,470	23,390	23,138	18,654	18,092	14,952	4,622	31,221	149,316	17,066	17,704	19,492	18,432	23,519	35,566	17,537	46,116
19155	Pottawattamie County, Iowa	31,262	7,671	6,832	6,456	4,239	3,339	2,255	470	26,639	33,896	4,677	4,683	5,230	4,578	5,484	6,927	2,317	40,089
19157	Poweshiek County, Iowa	7,133	1,861	1,515	1,445	965	792	406	149	26,063	7,421	1,153	1,098	1,122	1,047	1,239	1,298	464	37,836
19159	Ringgold County, Iowa	2,235	869	515	395	253	128	47	28	20,761	2,232	532	405	431	260	290	240	74	29,110
19161	Sac County, Iowa	4,936	1,527	1,293	963	504	355	226	68	21,818	4,748	911	828	794	696	718	627	174	32,874
19163	Scott County, Iowa	57,329	13,585	10,362	9,466	7,856	8,068	6,547	1,445	29,979	62,367	8,906	8,354	8,177	7,216	9,664	14,115	5,935	42,701
19165	Shelby County, Iowa	4,999	1,413	1,399	917	563	374	224	109	22,702	5,202	739	808	844	762	941	862	246	37,442
19167	Sioux County, Iowa	9,993	2,441	2,386	2,180	1,366	917	475	228	25,692	10,682	1,486	1,346	1,585	1,772	2,077	1,844	572	40,536
19169	Story County, Iowa	26,015	7,211	4,978	4,316	3,240	3,036	2,589	645	26,668	29,386	4,752	4,208	3,720	3,466	4,399	6,044	2,797	40,442
19171	Tama County, Iowa	6,773	1,907	1,579	1,349	884	568	386	100	24,297	7,020	1,077	1,038	1,127	1,036	1,248	1,192	302	37,419
19173	Taylor County, Iowa	2,866	1,140	773	423	281	177	65	7	18,641	2,817	634	487	480	389	408	352	67	31,297
19175	Union County, Iowa	5,156	1,790	1,157	999	474	475	220	41	21,550	5,278	1,009	989	866	748	712	761	193	31,905
19177	Van Buren County, Iowa	3,047	1,120	812	540	277	171	107	20	19,244	3,180	650	577	578	480	435	368	92	31,094
19179	Wapello County, Iowa	14,499	5,081	3,313	2,345	1,607	1,234	710	209	21,060	14,789	3,132	2,449	2,509	2,067	2,059	2,013	560	32,188
19181	Warren County, Iowa	12,782	2,438	2,148	2,354	2,217	2,243	1,128	254	32,452	14,709	1,380	1,628	1,616	1,856	2,654	4,204	1,371	50,349
19183	Washington County, Iowa	7,382	1,805	1,743	1,508	1,132	780	323	91	25,822	8,069	1,058	1,185	1,291	1,234	1,577	1,359	365	39,103
19185	Wayne County, Iowa	2,952	1,252	719	455	229	170	117	10	17,599	2,829	655	542	482	404	350	279	117	29,380
19187	Webster County, Iowa	15,884	4,716	3,666	3,040	2,048	1,373	867	174	23,692	15,862	2,807	2,595	2,448	2,268	2,339	2,656	749	35,334
19189	Winnebago County, Iowa	4,720	1,401	1,139	898	664	359	192	67	23,480	4,746	617	768	797	647	830	884	203	38,381
19191	Winneshiek County, Iowa	7,232	2,140	1,557	1,425	893	625	475	117	24,383	7,762	1,199	1,037	1,281	1,122	1,314	1,375	434	38,908
19193	Woodbury County, Iowa	36,979	10,553	7,799	6,529	4,870	3,972	2,300	956	25,186	39,256	5,941	5,818	5,985	5,208	5,994	7,526	2,784	38,509
19195	Worth County, Iowa	3,254	933	840	602	419	198	212	50	22,902	3,280	530	502	530	564	571	487	96	36,444
19197	Wright County, Iowa	5,885	1,740	1,268	1,167	817	497	296	100	24,582	5,972	1,002	915	944	868	1,034	948	261	36,197
Source Data: 1990 and 2000 Census, U.S. Census Bureau