Lead Paint Risk in New Castle County, Delaware

56.5%Pre-1978 Housing

132,910Pre-1978 Units

235,057Total Housing Units

145Census 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

132,910 housing units in New Castle County were built before 1978.
The county's pre-1978 housing share is 56.5%, compared with the state rate of 42.7%.
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 145 tracts; download the full county tract CSV.

Tract	Pre-1978	Total	Risk Rate	1970s	1960s	1950s	1940s	≤1939
Census Tract 26	1,660	1,682	98.7%	93	27	198	213	1,129
Census Tract 12	1,046	1,073	97.5%	16	290	17	22	701
Census Tract 3	1,312	1,355	96.8%	113	61	118	234	786
Census Tract 102	718	745	96.4%	5	194	508	11	0
Census Tract 112.04	1,384	1,439	96.2%	144	765	416	32	27
Census Tract 151	1,390	1,451	95.8%	257	358	360	406	9
Census Tract 116	1,188	1,257	94.5%	9	104	938	120	17
Census Tract 155.02	1,039	1,100	94.5%	33	188	452	202	164
Census Tract 110	1,212	1,292	93.8%	67	170	842	53	80
Census Tract 114	1,170	1,250	93.6%	168	581	394	9	18
Census Tract 4	1,517	1,629	93.1%	187	23	176	171	960
Census Tract 130	769	828	92.9%	32	78	582	33	44
Census Tract 122	1,843	1,997	92.3%	361	318	642	300	222
Census Tract 161	1,025	1,110	92.3%	162	84	57	126	596
Census Tract 133	727	790	92.0%	4	247	465	0	11
Census Tract 156	738	810	91.1%	23	141	365	50	159
Census Tract 152	2,147	2,375	90.4%	338	415	947	364	83
Census Tract 109	1,104	1,223	90.3%	42	409	501	74	78
Census Tract 132	1,096	1,217	90.1%	25	535	432	61	43
Census Tract 158.02	746	829	90.0%	95	119	266	255	11
Census Tract 24	2,091	2,329	89.8%	108	0	273	448	1,262
Census Tract 115	1,198	1,336	89.7%	89	152	774	165	18
Census Tract 134	938	1,047	89.6%	40	190	687	21	0
Census Tract 15	1,085	1,214	89.4%	61	93	86	71	774
Census Tract 2	2,050	2,304	89.0%	349	523	479	128	571
Census Tract 123	1,035	1,163	89.0%	112	185	433	176	129
Census Tract 124	1,594	1,797	88.7%	83	189	596	349	377
Census Tract 11	2,329	2,630	88.6%	434	503	495	329	568
Census Tract 25	1,430	1,617	88.4%	22	46	190	467	705
Census Tract 5	1,385	1,586	87.3%	117	44	79	106	1,039
Census Tract 107.03	690	795	86.8%	88	202	102	185	113
Census Tract 131	880	1,017	86.5%	148	128	480	33	91
Census Tract 142	637	736	86.5%	21	385	218	0	13
Census Tract 112.06	1,415	1,640	86.3%	364	799	236	0	16
Census Tract 14	947	1,102	85.9%	51	48	53	136	659
Census Tract 159	1,103	1,285	85.8%	62	112	864	42	23
Census Tract 125	1,920	2,248	85.4%	42	324	767	204	583
Census Tract 136.08	721	845	85.3%	67	432	206	10	6
Census Tract 13	1,759	2,064	85.2%	165	282	110	39	1,163
Census Tract 129	1,634	1,923	85.0%	308	542	474	168	142
Census Tract 111	1,056	1,253	84.3%	105	272	313	144	222
Census Tract 126	1,018	1,216	83.7%	29	106	512	284	87
Census Tract 147.02	535	643	83.2%	148	353	24	10	0
Census Tract 9	959	1,162	82.5%	50	176	100	120	513
Census Tract 127	1,610	1,961	82.1%	174	369	548	322	197
Census Tract 154	971	1,186	81.9%	25	218	700	18	10
Census Tract 22	812	993	81.8%	57	43	0	160	552
Census Tract 112.05	751	918	81.8%	261	390	88	0	12
Census Tract 104	1,635	2,007	81.5%	204	448	470	344	169
Census Tract 160	804	996	80.7%	105	423	208	62	6
Census Tract 101.04	1,486	1,862	79.8%	336	372	270	257	251
Census Tract 23	1,012	1,270	79.7%	31	12	130	464	375
Census Tract 139.01	1,030	1,292	79.7%	408	363	259	0	0
Census Tract 16	939	1,189	79.0%	27	52	74	58	728
Census Tract 141	1,504	1,927	78.0%	475	257	727	45	0
Census Tract 6.02	1,039	1,351	76.9%	0	70	293	248	428
Census Tract 120	1,377	1,790	76.9%	238	632	329	75	103
Census Tract 121	1,016	1,323	76.8%	154	231	438	111	82
Census Tract 107.04	1,650	2,154	76.6%	238	375	161	459	417
Census Tract 112.03	1,667	2,176	76.6%	572	707	272	116	0
Census Tract 140	1,563	2,072	75.4%	652	678	221	12	0
Census Tract 150	1,543	2,049	75.3%	406	682	318	91	46
Census Tract 144.03	1,244	1,657	75.1%	225	481	370	113	55
Census Tract 108	1,422	1,902	74.8%	310	420	410	152	130
Census Tract 29	1,410	1,887	74.7%	465	185	176	183	401
Census Tract 147.05	1,752	2,345	74.7%	899	249	429	167	8
Census Tract 6.01	708	961	73.7%	0	25	282	109	292
Census Tract 144.02	946	1,305	72.5%	140	297	323	86	100
Census Tract 113	798	1,112	71.8%	173	165	390	33	37
Census Tract 143.01	382	536	71.3%	237	66	24	22	33
Census Tract 117	1,407	1,989	70.7%	468	468	281	54	136
Census Tract 21	719	1,029	69.9%	74	55	84	47	459
Census Tract 137	1,179	1,691	69.7%	272	564	203	54	86
Census Tract 105.02	1,912	2,763	69.2%	249	159	239	626	639
Census Tract 147.03	1,516	2,217	68.4%	123	302	1,029	62	0
Census Tract 135.01	1,802	2,688	67.0%	630	670	276	0	226
Census Tract 30.02	489	740	66.1%	31	26	249	25	158
Census Tract 138	1,785	2,708	65.9%	800	439	444	34	68
Census Tract 103	1,166	1,778	65.6%	100	198	547	159	162
Census Tract 112.02	991	1,560	63.5%	404	419	135	27	6
Census Tract 101.06	619	976	63.4%	407	49	109	42	12
Census Tract 119	859	1,354	63.4%	46	89	200	116	408
Census Tract 28	1,151	1,827	63.0%	50	56	58	347	640
Census Tract 136.04	1,040	1,667	62.4%	202	655	160	10	13
Census Tract 164.04	739	1,193	61.9%	162	100	192	52	233
Census Tract 118	1,425	2,362	60.3%	161	519	289	228	228
Census Tract 136.10	1,284	2,180	58.9%	672	310	80	0	222
Census Tract 143.02	580	985	58.9%	158	274	128	0	20
Census Tract 112.01	628	1,069	58.7%	152	398	68	0	10
Census Tract 101.05	586	1,013	57.8%	119	286	140	19	22
Census Tract 163.09	988	1,715	57.6%	454	173	87	274	0
Census Tract 162	853	1,518	56.2%	198	97	111	75	372
Census Tract 136.13	1,278	2,298	55.6%	293	622	363	0	0
Census Tract 136.07	1,577	2,905	54.3%	1,351	127	58	19	22
Census Tract 145.02	598	1,104	54.2%	193	64	133	160	48
Census Tract 163.08	837	1,610	52.0%	669	140	28	0	0
Census Tract 136.14	616	1,207	51.0%	15	334	171	5	91
Census Tract 135.08	1,063	2,150	49.4%	507	328	61	0	167
Census Tract 19.02	579	1,187	48.8%	25	19	128	42	365
Census Tract 148.03	833	1,852	45.0%	403	300	119	11	0