Lead Paint Risk in Pima County, Arizona

39.5%Pre-1978 Housing

187,601Pre-1978 Units

475,378Total Housing Units

270Census Tracts

How to Interpret This

This is an area-level screening signal based on Census housing-age data. It does not confirm lead paint in any specific home. Homes built before 1978 may contain lead-based paint, and certified inspection or testing is the only way to confirm a property-level hazard.

Reporter / Resident Story Kit

187,601 housing units in Pima County were built before 1978.
The county's pre-1978 housing share is 39.5%, compared with the state rate of 29.9%.
Local questions: Which neighborhoods have the oldest housing stock? Are lead-safe renovation resources available? Do renters and families with young children know how to request testing?

Highest-Risk Census Tracts

Individual census tracts ranked by pre-1978 housing percentage. Showing the top 100 of 270 tracts; download the full county tract CSV.

Tract	Pre-1978	Total	Risk Rate	1970s	1960s	1950s	1940s	≤1939
Census Tract 34	2,508	2,586	97.0%	231	209	1,489	531	48
Census Tract 32.01	1,309	1,352	96.8%	44	166	814	277	8
Census Tract 33.02	1,735	1,803	96.2%	356	297	1,060	22	0
Census Tract 39.01	566	606	93.4%	260	190	114	2	0
Census Tract 41.10	821	882	93.1%	798	23	0	0	0
Census Tract 40.29	1,660	1,817	91.4%	1,530	130	0	0	0
Census Tract 20	2,434	2,667	91.3%	489	926	854	165	0
Census Tract 16	1,868	2,085	89.6%	188	225	547	682	226
Census Tract 6	2,306	2,589	89.1%	166	210	662	664	604
Census Tract 40.08	1,874	2,129	88.0%	270	292	1,247	38	27
Census Tract 40.38	976	1,112	87.8%	840	54	82	0	0
Census Tract 39.03	852	988	86.2%	319	197	255	68	13
Census Tract 39.02	734	856	85.7%	45	59	591	39	0
Census Tract 35.03	1,551	1,817	85.4%	85	392	954	107	13
Census Tract 21	1,760	2,063	85.3%	238	205	888	413	16
Census Tract 40.30	649	763	85.1%	129	145	375	0	0
Census Tract 32.02	1,514	1,796	84.3%	366	381	476	281	10
Census Tract 35.04	905	1,085	83.4%	104	285	487	29	0
Census Tract 38.01	1,023	1,242	82.4%	224	225	263	212	99
Census Tract 35.02	1,562	1,902	82.1%	534	459	506	63	0
Census Tract 22.01	1,046	1,281	81.7%	730	176	140	0	0
Census Tract 17	1,287	1,602	80.3%	211	103	552	358	63
Census Tract 43.30	1,345	1,678	80.2%	705	600	40	0	0
Census Tract 52	1,750	2,182	80.2%	323	394	426	254	353
Census Tract 30.02	1,918	2,394	80.1%	566	431	921	0	0
Census Tract 31.02	1,719	2,145	80.1%	336	361	768	254	0
Census Tract 40.68	2,028	2,531	80.1%	662	287	924	21	134
Census Tract 19	1,674	2,094	79.9%	294	318	733	151	178
Census Tract 46.28	396	499	79.4%	356	40	0	0	0
Census Tract 15	1,961	2,519	77.8%	311	149	558	334	609
Census Tract 41.12	755	972	77.7%	579	145	31	0	0
Census Tract 43.17	1,881	2,422	77.7%	1,179	663	30	9	0
Census Tract 18.01	2,376	3,079	77.2%	208	886	833	436	13
Census Tract 44.15	603	782	77.1%	188	193	149	53	20
Census Tract 7	1,981	2,580	76.8%	184	353	702	621	121
Census Tract 43.07	1,783	2,324	76.7%	1,346	437	0	0	0
Census Tract 46.14	1,188	1,555	76.4%	800	235	153	0	0
Census Tract 54	1,553	2,067	75.1%	87	47	168	225	1,026
Census Tract 27.02	2,233	2,986	74.8%	1,384	320	362	106	61
Census Tract 3	645	865	74.6%	79	85	154	50	277
Census Tract 24	1,515	2,032	74.6%	204	213	597	384	117
Census Tract 40.77	940	1,269	74.1%	754	173	13	0	0
Census Tract 18.02	1,220	1,656	73.7%	141	219	547	191	122
Census Tract 33.03	1,623	2,269	71.5%	591	407	607	9	9
Census Tract 40.78	1,173	1,648	71.2%	813	315	45	0	0
Census Tract 45.13	1,136	1,599	71.0%	513	437	186	0	0
Census Tract 29.01	2,243	3,178	70.6%	338	407	847	478	173
Census Tract 45.05	1,392	1,978	70.4%	482	545	333	14	18
Census Tract 40.10	1,167	1,680	69.5%	481	570	95	0	21
Census Tract 40.76	1,507	2,171	69.4%	499	740	268	0	0
Census Tract 4.01	989	1,430	69.2%	140	34	110	96	609
Census Tract 30.03	1,710	2,474	69.1%	864	377	348	89	32
Census Tract 40.69	1,332	1,931	69.0%	421	726	146	39	0
Census Tract 5.02	656	956	68.6%	134	46	63	142	271
Census Tract 29.04	1,217	1,777	68.5%	446	266	366	76	63
Census Tract 31.04	1,084	1,584	68.4%	490	206	195	150	43
Census Tract 35.05	1,391	2,042	68.1%	429	210	619	133	0
Census Tract 28.01	796	1,179	67.5%	421	135	201	39	0
Census Tract 47.18	797	1,181	67.5%	694	103	0	0	0
Census Tract 26.03	1,032	1,536	67.2%	265	367	206	164	30
Census Tract 23	1,196	1,791	66.8%	214	267	266	295	154
Census Tract 4.02	602	912	66.0%	26	40	34	15	487
Census Tract 14	2,323	3,581	64.9%	882	380	445	367	249
Census Tract 28.02	1,514	2,345	64.6%	466	240	625	168	15
Census Tract 40.56	604	939	64.3%	551	39	0	14	0
Census Tract 37.05	1,171	1,833	63.9%	560	323	269	19	0
Census Tract 35.06	1,141	1,804	63.2%	409	262	427	43	0
Census Tract 40.34	897	1,422	63.1%	630	171	89	0	7
Census Tract 11	718	1,156	62.1%	122	139	252	115	90
Census Tract 28.03	788	1,280	61.6%	170	118	284	194	22
Census Tract 40.37	773	1,259	61.4%	652	113	8	0	0
Census Tract 31.03	1,082	1,767	61.2%	353	323	291	115	0
Census Tract 2	1,504	2,491	60.4%	476	514	255	24	235
Census Tract 13.02	780	1,292	60.4%	212	227	136	197	8
Census Tract 40.70	975	1,620	60.2%	620	324	31	0	0
Census Tract 43.12	1,265	2,108	60.0%	662	426	177	0	0
Census Tract 40.36	732	1,223	59.9%	391	281	60	0	0
Census Tract 40.48	1,188	1,986	59.8%	763	385	40	0	0
Census Tract 40.72	736	1,235	59.6%	160	541	0	35	0
Census Tract 40.80	1,070	1,799	59.5%	816	254	0	0	0
Census Tract 27.04	751	1,273	59.0%	348	186	92	125	0
Census Tract 9408	811	1,380	58.8%	452	167	55	57	80
Census Tract 30.04	562	973	57.8%	213	160	147	42	0
Census Tract 40.67	1,134	1,998	56.8%	1,013	62	50	9	0
Census Tract 47.17	770	1,363	56.5%	301	396	57	16	0
Census Tract 13.03	874	1,551	56.4%	526	54	239	55	0
Census Tract 25.09	1,034	1,832	56.4%	131	229	498	127	49
Census Tract 37.02	1,358	2,413	56.3%	617	227	302	65	147
Census Tract 5.01	679	1,215	55.9%	151	136	66	80	246
Census Tract 47.26	1,096	1,963	55.8%	696	359	22	10	9
Census Tract 45.08	1,331	2,417	55.1%	664	512	75	0	80
Census Tract 8	540	999	54.1%	88	7	32	136	277
Census Tract 40.49	883	1,635	54.0%	432	419	0	32	0
Census Tract 46.47	765	1,417	54.0%	729	12	19	0	5
Census Tract 27.03	1,251	2,320	53.9%	590	172	157	289	43
Census Tract 46.15	707	1,312	53.9%	335	245	88	39	0
Census Tract 29.05	1,389	2,585	53.7%	612	254	450	28	45
Census Tract 40.53	738	1,378	53.6%	581	59	98	0	0
Census Tract 13.04	1,471	2,752	53.5%	121	485	509	283	73
Census Tract 45.14	892	1,693	52.7%	483	172	152	85	0