Which ZIP code in Lake County has the highest share of households with children?

46406 (Gary), at 40.1%, among 26 ZIP codes with at least 1,000 residents.

Why are some ZIP codes missing?

ZIP codes with fewer than 1,000 residents are left out because their survey estimates swing too much to rank, and so are ZIP codes where the Census Bureau did not publish this figure.

ZIP codes with the most families with kids in Lake County, IN

These are the 25 ZIP codes in Lake County with the highest share of households with children, out of 26 with at least 1,000 residents. 46406 (Gary, 40.1%), 46327 (Hammond, 39.4%) and 46307 (Crown Point, 35.8%) lead the list. There is no single "best" ZIP code in Lake County; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.

ZIP codes with the most families with kids in Lake County

Rank	ZIP	Mailing city	Households with children under 18	Residents	Households	Residential mailboxes
1	46406	Gary	40.1%	9,001	3,487	3,608
2	46327	Hammond	39.4%	10,597	3,843	3,665
3	46307	Crown Point	35.8%	71,673	25,277	29,022
4	46312	East Chicago	35.7%	26,022	9,943	9,179
5	46373	Saint John	34.6%	18,843	6,658	7,611
6	46320	Hammond	33.9%	14,353	5,480	5,542
7	46323	Hammond	33.7%	23,047	8,374	8,557
8	46303	Cedar Lake	33.6%	17,680	6,385	8,131
9	46402	Gary	33.3%	5,836	2,258	2,578
10	46405	Lake Station	33.2%	12,184	4,357	4,486
11	46356	Lowell	32.9%	19,721	7,078	8,122
12	46319	Griffith	31.5%	17,847	7,615	7,764
13	46311	Dyer	31.3%	23,321	8,835	9,378
14	46409	Gary	31.1%	7,184	2,648	2,974
15	46404	Gary	30.9%	15,428	5,873	6,780
16	46341	Hebron	30.8%	10,048	3,964	4,111
17	46324	Hammond	29.2%	21,409	8,767	8,673
18	46408	Gary	28.2%	15,747	6,099	6,266
19	46342	Hobart	28.0%	32,224	13,053	13,324
20	46321	Munster	27.4%	23,733	9,471	9,475
21	46394	Whiting	27.2%	11,894	4,858	4,655
22	46322	Highland	26.6%	23,680	10,440	10,386
23	46375	Schererville	26.4%	24,188	10,079	10,610
24	46410	Merrillville	24.9%	39,243	16,859	17,463
25	46407	Gary	24.1%	8,577	3,778	4,540

How we ranked them

Ranked by the share of households with one or more people under 18 (ACS Data Profile, 2020–2024). The Census Bureau does not publish a margin of error for this share in our files. ZIP codes need at least 1,000 residents to be ranked; 26 of 28 qualify.

Which of these to mail, and why

Households with children buy tutoring, youth sports, pediatric and family dental care, child care, birthday venues and family dining. EDDM reaches every door on a route, so a higher share means more of your pieces land with families.

The top five ZIP codes on this list hold 49,208 households, on 89 carrier routes with 53,085 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 46406 on the EDDM route map

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Frequently asked questions

Which ZIP code in Lake County has the highest share of households with children?: 46406 (Gary), at 40.1%, among 26 ZIP codes with at least 1,000 residents.
How is this ranking calculated?: Ranked by the share of households with one or more people under 18 (ACS Data Profile, 2020–2024). The Census Bureau does not publish a margin of error for this share in our files.
Why are some ZIP codes missing?: ZIP codes with fewer than 1,000 residents are left out because their survey estimates swing too much to rank, and so are ZIP codes where the Census Bureau did not publish this figure.

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.