Lead Paint Risk in Ada County, Idaho

28.6%Pre-1978 Housing

58,596Pre-1978 Units

205,068Total Housing Units

129Census 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

58,596 housing units in Ada County were built before 1978.
The county's pre-1978 housing share is 28.6%, compared with the state rate of 39.9%.
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 129 tracts; download the full county tract CSV.

Tract	Pre-1978	Total	Risk Rate	1970s	1960s	1950s	1940s	≤1939
Census Tract 12.01	1,351	1,510	89.5%	388	432	507	24	0
Census Tract 6.02	1,549	1,773	87.4%	206	224	35	117	967
Census Tract 15	1,497	1,746	85.7%	130	167	465	521	214
Census Tract 14.02	1,335	1,577	84.7%	759	211	346	11	8
Census Tract 6.01	893	1,070	83.5%	92	59	45	38	659
Census Tract 9.01	683	878	77.8%	308	147	87	72	69
Census Tract 5.02	1,281	1,648	77.7%	129	151	182	201	618
Census Tract 24.19	1,035	1,365	75.8%	667	312	36	4	16
Census Tract 19	1,676	2,292	73.1%	521	744	380	19	12
Census Tract 10.03	1,113	1,534	72.6%	163	139	305	225	281
Census Tract 10.01	848	1,170	72.5%	131	106	263	235	113
Census Tract 21	617	861	71.7%	543	16	52	0	6
Census Tract 5.01	967	1,379	70.1%	166	135	334	128	204
Census Tract 22.27	660	943	70.0%	657	3	0	0	0
Census Tract 16	1,489	2,209	67.4%	651	455	350	23	10
Census Tract 17.01	677	1,014	66.8%	217	83	208	89	80
Census Tract 14.01	789	1,186	66.5%	152	228	129	228	52
Census Tract 12.03	1,176	1,809	65.0%	250	426	385	38	77
Census Tract 18	1,352	2,105	64.2%	545	279	462	26	40
Census Tract 7.01	1,991	3,109	64.0%	529	214	420	162	666
Census Tract 4.02	1,215	1,952	62.2%	132	217	134	235	497
Census Tract 103.47	1,041	1,759	59.2%	709	169	74	29	60
Census Tract 8.03	1,124	1,945	57.8%	998	97	5	10	14
Census Tract 9.02	809	1,399	57.8%	259	252	14	175	109
Census Tract 1.02	1,360	2,378	57.2%	273	57	210	98	722
Census Tract 23.18	1,105	1,961	56.3%	547	115	290	120	33
Census Tract 24.14	560	1,057	53.0%	488	61	11	0	0
Census Tract 24.18	808	1,574	51.3%	522	222	40	0	24
Census Tract 2.02	1,415	2,774	51.0%	541	442	399	19	14
Census Tract 2.01	807	1,633	49.4%	151	146	199	89	222
Census Tract 17.02	861	1,787	48.2%	214	185	250	141	71
Census Tract 4.01	483	1,007	48.0%	234	43	77	77	52
Census Tract 24.15	505	1,073	47.1%	407	41	21	36	0
Census Tract 3.02	668	1,427	46.8%	188	244	185	26	25
Census Tract 8.10	820	1,776	46.2%	526	69	87	127	11
Census Tract 104.09	748	1,635	45.7%	666	19	44	0	19
Census Tract 105.01	401	890	45.1%	360	2	16	11	12
Census Tract 23.17	562	1,248	45.0%	444	63	0	0	55
Census Tract 12.04	833	1,911	43.6%	560	147	50	0	76
Census Tract 8.06	606	1,491	40.6%	230	98	80	70	128
Census Tract 11	878	2,252	39.0%	453	196	128	70	31
Census Tract 24.16	813	2,095	38.8%	755	28	0	0	30
Census Tract 20	723	2,048	35.3%	386	125	91	73	48
Census Tract 102.35	673	1,914	35.2%	511	35	39	8	80
Census Tract 22.31	380	1,122	33.9%	349	5	19	7	0
Census Tract 23.16	387	1,151	33.6%	271	49	13	54	0
Census Tract 22.23	548	1,707	32.1%	436	112	0	0	0
Census Tract 7.04	494	1,584	31.2%	346	85	41	9	13
Census Tract 104.11	353	1,145	30.8%	331	13	9	0	0
Census Tract 23.19	579	1,918	30.2%	424	109	28	18	0
Census Tract 24.12	579	2,048	28.3%	480	35	18	0	46
Census Tract 103.68	410	1,493	27.5%	69	48	45	46	202
Census Tract 22.29	359	1,338	26.8%	318	13	28	0	0
Census Tract 22.28	294	1,113	26.4%	247	47	0	0	0
Census Tract 8.07	267	1,034	25.8%	155	33	30	42	7
Census Tract 104.08	436	1,743	25.0%	202	7	0	83	144
Census Tract 103.36	209	849	24.6%	76	93	0	0	40
Census Tract 23.13	404	1,687	23.9%	218	169	0	8	9
Census Tract 3.06	430	1,818	23.7%	290	83	44	0	13
Census Tract 8.09	235	1,184	19.8%	158	0	62	0	15
Census Tract 23.15	489	2,497	19.6%	389	0	37	63	0
Census Tract 101.01	318	1,633	19.5%	255	8	0	0	55
Census Tract 103.71	208	1,080	19.3%	64	0	125	0	19
Census Tract 103.64	434	2,274	19.1%	427	7	0	0	0
Census Tract 1.01	196	1,037	18.9%	107	11	23	16	39
Census Tract 10.02	229	1,257	18.2%	134	16	26	0	53
Census Tract 103.57	265	1,456	18.2%	0	0	0	0	265
Census Tract 22.30	278	1,558	17.8%	209	11	13	0	45
Census Tract 102.32	246	1,379	17.8%	185	7	0	7	47
Census Tract 103.46	122	685	17.8%	90	0	6	0	26
Census Tract 22.26	184	1,127	16.3%	174	10	0	0	0
Census Tract 104.04	255	1,566	16.3%	163	0	25	0	67
Census Tract 24.17	174	1,088	16.0%	156	18	0	0	0
Census Tract 102.28	223	1,408	15.8%	16	147	0	34	26
Census Tract 23.14	329	2,094	15.7%	201	26	15	74	13
Census Tract 102.34	374	2,461	15.2%	259	64	13	0	38
Census Tract 102.33	184	1,247	14.8%	135	0	0	0	49
Census Tract 102.31	108	833	13.0%	64	4	8	32	0
Census Tract 103.69	163	1,262	12.9%	163	0	0	0	0
Census Tract 3.03	144	1,136	12.7%	95	18	0	31	0
Census Tract 103.52	248	2,002	12.4%	94	76	42	0	36
Census Tract 104.03	209	1,690	12.4%	151	0	21	0	37
Census Tract 103.51	170	1,423	11.9%	13	148	0	0	9
Census Tract 102.30	199	1,685	11.8%	98	0	18	0	83
Census Tract 103.48	185	1,582	11.7%	177	0	8	0	0
Census Tract 102.37	277	2,440	11.4%	119	70	34	21	33
Census Tract 3.05	148	1,353	10.9%	86	55	7	0	0
Census Tract 103.67	267	2,487	10.7%	187	66	14	0	0
Census Tract 105.06	145	1,632	8.9%	124	0	7	14	0
Census Tract 103.42	158	1,908	8.3%	92	0	5	0	61
Census Tract 104.07	151	2,020	7.5%	21	0	34	0	96
Census Tract 22.25	104	1,429	7.3%	89	15	0	0	0
Census Tract 101.02	164	2,246	7.3%	128	19	0	0	17
Census Tract 8.05	103	1,429	7.2%	58	17	10	18	0
Census Tract 104.06	146	2,046	7.1%	24	0	0	8	114
Census Tract 103.40	113	1,684	6.7%	74	22	0	0	17
Census Tract 103.39	88	1,343	6.6%	8	80	0	0	0
Census Tract 104.10	134	2,068	6.5%	105	0	22	0	7
Census Tract 8.08	90	1,420	6.3%	68	22	0	0	0
Census Tract 103.61	84	1,505	5.6%	0	75	0	0	9