Lead Paint Risk in San Joaquin County, California

45.1%Pre-1978 Housing

115,938Pre-1978 Units

256,826Total Housing Units

174Census 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

115,938 housing units in San Joaquin County were built before 1978.
The county's pre-1978 housing share is 45.1%, compared with the state rate of 56.7%.
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 174 tracts; download the full county tract CSV.

Tract	Pre-1978	Total	Risk Rate	1970s	1960s	1950s	1940s	≤1939
Census Tract 12	2,021	2,117	95.5%	101	93	116	793	918
Census Tract 32.03	1,428	1,505	94.9%	74	731	547	42	34
Census Tract 33.11	1,105	1,164	94.9%	387	517	185	0	16
Census Tract 32.16	994	1,052	94.5%	799	122	73	0	0
Census Tract 13	2,007	2,125	94.4%	159	198	365	450	835
Census Tract 18	1,104	1,174	94.0%	145	251	150	424	134
Census Tract 4.01	1,257	1,338	93.9%	77	40	178	32	930
Census Tract 16	751	800	93.9%	108	54	149	162	278
Census Tract 42.05	1,292	1,378	93.8%	198	418	566	68	42
Census Tract 11.01	1,690	1,808	93.5%	101	200	920	390	79
Census Tract 6	656	711	92.3%	89	57	123	62	325
Census Tract 5	857	929	92.2%	200	175	35	120	327
Census Tract 1.02	1,588	1,758	90.3%	243	219	99	81	946
Census Tract 33.05	1,571	1,747	89.9%	348	395	821	0	7
Census Tract 10	1,964	2,196	89.4%	472	409	998	83	2
Census Tract 9	1,842	2,065	89.2%	178	356	493	383	432
Census Tract 53.09	936	1,054	88.8%	30	80	571	193	62
Census Tract 14	1,813	2,043	88.7%	213	543	512	422	123
Census Tract 33.06	1,386	1,572	88.2%	589	379	301	98	19
Census Tract 43.02	2,061	2,339	88.1%	209	501	680	451	220
Census Tract 35.02	1,010	1,155	87.4%	525	168	227	50	40
Census Tract 42.04	1,165	1,344	86.7%	148	120	231	124	542
Census Tract 31.09	1,781	2,106	84.6%	323	462	778	128	90
Census Tract 7	1,150	1,365	84.2%	24	138	162	171	655
Census Tract 15.02	1,071	1,274	84.1%	103	128	234	423	183
Census Tract 53.03	1,553	1,861	83.4%	157	262	201	438	495
Census Tract 11.02	1,766	2,122	83.2%	321	345	393	614	93
Census Tract 33.08	680	819	83.0%	326	124	218	0	12
Census Tract 23	1,244	1,505	82.7%	47	134	352	309	402
Census Tract 32.05	1,175	1,423	82.6%	365	208	430	145	27
Census Tract 44.04	1,017	1,235	82.3%	256	157	126	239	239
Census Tract 42.06	1,072	1,310	81.8%	523	480	69	0	0
Census Tract 22.01	770	943	81.7%	87	125	140	373	45
Census Tract 45.02	1,037	1,269	81.7%	63	101	36	88	749
Census Tract 4.02	1,848	2,276	81.2%	112	325	58	100	1,253
Census Tract 51.40	1,157	1,432	80.8%	295	389	410	63	0
Census Tract 33.10	1,236	1,560	79.2%	489	519	158	18	52
Census Tract 20	990	1,254	78.9%	153	239	291	115	192
Census Tract 44.03	837	1,063	78.7%	189	145	201	59	243
Census Tract 34.06	1,052	1,338	78.6%	905	82	10	0	55
Census Tract 19	1,249	1,605	77.8%	167	338	463	95	186
Census Tract 42.03	1,218	1,567	77.7%	128	140	360	266	324
Census Tract 25.03	497	644	77.2%	105	192	155	26	19
Census Tract 51.09	1,134	1,471	77.1%	143	368	396	45	182
Census Tract 27.01	1,523	1,981	76.9%	126	260	543	259	335
Census Tract 27.02	825	1,075	76.7%	141	144	373	100	67
Census Tract 33.07	1,361	1,781	76.4%	155	672	530	0	4
Census Tract 42.02	551	721	76.4%	96	394	45	8	8
Census Tract 32.18	694	911	76.2%	455	10	150	50	29
Census Tract 31.10	1,326	1,754	75.6%	422	255	422	142	85
Census Tract 43.08	985	1,304	75.5%	542	192	184	8	59
Census Tract 32.09	1,159	1,550	74.8%	1,098	15	14	0	32
Census Tract 51.08	1,180	1,584	74.5%	314	331	135	218	182
Census Tract 24.01	1,021	1,398	73.0%	240	158	459	52	112
Census Tract 1.01	456	630	72.4%	66	30	80	24	256
Census Tract 17	853	1,193	71.5%	147	115	157	280	154
Census Tract 33.12	720	1,011	71.2%	180	408	132	0	0
Census Tract 31.06	1,287	1,828	70.4%	940	258	80	0	9
Census Tract 3	765	1,089	70.2%	298	110	68	27	262
Census Tract 36.01	851	1,232	69.1%	363	216	145	34	93
Census Tract 51.31	1,018	1,474	69.1%	329	320	267	28	74
Census Tract 37	864	1,258	68.7%	103	248	329	94	90
Census Tract 55.03	542	797	68.0%	121	134	182	83	22
Census Tract 32.17	768	1,166	65.9%	651	66	46	0	5
Census Tract 8.02	314	483	65.0%	65	93	51	25	80
Census Tract 36.02	833	1,311	63.5%	106	254	110	151	212
Census Tract 50.01	1,434	2,262	63.4%	491	363	338	104	138
Census Tract 43.09	610	966	63.1%	266	247	71	9	17
Census Tract 33.13	739	1,173	63.0%	417	184	71	0	67
Census Tract 34.04	1,194	1,897	62.9%	1,065	54	7	42	26
Census Tract 31.08	1,307	2,094	62.4%	1,176	115	13	0	3
Census Tract 35.01	551	901	61.2%	202	152	155	0	42
Census Tract 51.32	631	1,033	61.1%	236	96	163	41	95
Census Tract 31.12	939	1,570	59.8%	841	7	66	11	14
Census Tract 47.04	1,139	1,906	59.8%	340	247	145	64	343
Census Tract 41.06	491	832	59.0%	108	114	65	66	138
Census Tract 51.26	872	1,491	58.5%	504	197	131	29	11
Census Tract 39	391	672	58.2%	106	122	38	65	60
Census Tract 31.16	568	1,009	56.3%	486	40	28	0	14
Census Tract 38.03	702	1,267	55.4%	163	190	188	27	134
Census Tract 43.07	811	1,468	55.2%	629	152	24	0	6
Census Tract 53.07	560	1,029	54.4%	512	37	11	0	0
Census Tract 31.11	1,100	2,024	54.3%	950	44	86	11	9
Census Tract 47.03	800	1,481	54.0%	373	234	84	8	101
Census Tract 53.11	498	924	53.9%	317	111	27	11	32
Census Tract 54.06	588	1,104	53.3%	27	48	92	70	351
Census Tract 46	1,173	2,219	52.9%	616	317	33	107	100
Census Tract 49.06	536	1,030	52.0%	170	120	141	52	53
Census Tract 53.10	652	1,260	51.7%	148	283	209	12	0
Census Tract 24.02	313	636	49.2%	57	14	124	65	53
Census Tract 48	1,038	2,152	48.2%	381	247	138	79	193
Census Tract 22.02	706	1,479	47.7%	88	168	330	53	67
Census Tract 40.01	437	925	47.2%	112	77	109	74	65
Census Tract 45.01	456	967	47.2%	261	46	63	42	44
Census Tract 47.01	567	1,210	46.9%	301	172	41	0	53
Census Tract 51.24	573	1,265	45.3%	383	72	118	0	0
Census Tract 34.05	511	1,131	45.2%	348	127	0	0	36
Census Tract 51.25	328	745	44.0%	213	71	11	28	5
Census Tract 43.10	459	1,086	42.3%	200	221	33	5	0
Census Tract 51.29	494	1,183	41.8%	441	31	22	0	0