Lake County, IN ZIP Codes
28 ZIP codes cover all or part of Lake County, Indiana. The Census Bureau counts 500,379 residents in the county, with a median household income of $71,493 and a median home value of $230,600. Median household income ranges from $28,526 in 46407 to $127,146 in 46373. Its largest communities include Hammond, Gary, Portage, Merrillville and Crown Point.
Lake County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 500,379 |
| Households | 195,130 |
| Median household income | $71,493 |
| Median home value | $230,600 |
| Median age | 39.7 |
| Median rent | $1,131 |
All 28 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 514,773 |
| Households (sum of ZIP codes) | 200,615 |
| Median household income, range across ZIP codes | $28,526 (46407) to $127,146 (46373) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $75,811 |
| Homeowners | 72.2% |
| Households with kids under 18 | 30.8% |
| Moved in the past year | 9.5% |
| Carrier routes in EDDM2GO's route library | 367 routes, 212,531 homes (26 of 28 ZIP codes) |
Top facts
- Highest median household income in Lake County: 46373 ($127,146)
- Most residents: 46307 (71,673 people)
- Highest homeownership: 46373 (97.1% own their home)
- Most households with kids: 46406 (40.1% of households)
- Most new movers: 46402 (28.2% moved in last year)
- Youngest median age: 46320 (32.6 years)
- Highest median home value: 46373 ($408,900)
Every ZIP code in Lake County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 46307 | Crown Point | 71,673 | 25,277 | $107,800 | $324,100 | 88.0% | 35.8% | 7.7% | 48 | 30,512 | 97% of its land |
| 46410 | Merrillville | 39,243 | 16,859 | $64,127 | $208,100 | 66.0% | 24.9% | 10.3% | 27 | 19,480 | 100% of its land |
| 46342 | Hobart | 32,224 | 13,053 | $75,521 | $213,000 | 74.1% | 28.0% | 12.4% | 23 | 13,935 | 72% of its land |
| 46312 | East Chicago | 26,022 | 9,943 | $42,125 | $105,400 | 42.9% | 35.7% | 11.8% | 16 | 9,734 | 100% of its land |
| 46375 | Schererville | 24,188 | 10,079 | $93,160 | $315,400 | 83.0% | 26.4% | 5.3% | 16 | 11,410 | 100% of its land |
| 46321 | Munster | 23,733 | 9,471 | $110,187 | $334,300 | 87.0% | 27.4% | 5.4% | 23 | 10,136 | 100% of its land |
| 46322 | Highland | 23,680 | 10,440 | $78,062 | $233,300 | 78.4% | 26.6% | 7.1% | 23 | 11,199 | 100% of its land |
| 46311 | Dyer | 23,321 | 8,835 | $116,652 | $331,600 | 90.1% | 31.3% | 6.7% | 15 | 9,793 | 100% of its land |
| 46323 | Hammond | 23,047 | 8,374 | $59,688 | $166,400 | 67.5% | 33.7% | 14.0% | 18 | 8,919 | 100% of its land |
| 46324 | Hammond | 21,409 | 8,767 | $63,052 | $158,800 | 68.0% | 29.2% | 7.8% | 18 | 9,066 | 100% of its land |
| 46356 | Lowell | 19,721 | 7,078 | $89,217 | $281,500 | 88.5% | 32.9% | 4.9% | 12 | 8,408 | 100% of its land |
| 46373 | Saint John | 18,843 | 6,658 | $127,146 | $408,900 | 97.1% | 34.6% | 4.9% | 12 | 7,947 | 100% of its land |
| 46319 | Griffith | 17,847 | 7,615 | $74,662 | $203,300 | 72.9% | 31.5% | 14.5% | 13 | 8,242 | 100% of its land |
| 46303 | Cedar Lake | 17,680 | 6,385 | $84,211 | $293,500 | 86.5% | 33.6% | 5.5% | 11 | 8,292 | 100% of its land |
| 46408 | Gary | 15,747 | 6,099 | $47,453 | $102,600 | 58.8% | 28.2% | 9.4% | 10 | 6,615 | 100% of its land |
| 46404 | Gary | 15,428 | 5,873 | $42,256 | $95,200 | 56.4% | 30.9% | 14.2% | 11 | 7,005 | 100% of its land |
| 46320 | Hammond | 14,353 | 5,480 | $37,158 | $135,000 | 41.2% | 33.9% | 10.7% | 10 | 6,066 | 100% of its land |
| 46405 | Lake Station | 12,184 | 4,357 | $60,881 | $139,200 | 75.3% | 33.2% | 13.6% | 7 | 4,725 | 100% of its land |
| 46394 | Whiting | 11,894 | 4,858 | $66,176 | $173,200 | 65.2% | 27.2% | 8.1% | 9 | 4,878 | 100% of its land |
| 46403 | Gary | 10,929 | 4,950 | $45,991 | $177,600 | 48.8% | 23.3% | 9.6% | 8 | 5,828 | 90% of its land |
| 46327 | Hammond | 10,597 | 3,843 | $47,288 | $142,100 | 61.5% | 39.4% | 7.7% | 7 | 3,889 | 100% of its land |
| 46341 | Hebron | 10,048 | 3,964 | $89,559 | $269,300 | 86.5% | 30.8% | 10.9% | 7 | 4,233 | 49% of its land |
| 46406 | Gary | 9,001 | 3,487 | $35,839 | $91,700 | 48.0% | 40.1% | 13.3% | 6 | 3,833 | 100% of its land |
| 46407 | Gary | 8,577 | 3,778 | $28,526 | $60,200 | 41.2% | 24.1% | 6.3% | 7 | 4,769 | 100% of its land |
| 46409 | Gary | 7,184 | 2,648 | $44,667 | $78,800 | 44.5% | 31.1% | 27.8% | 6 | 3,143 | 100% of its land |
| 46402 | Gary | 5,836 | 2,258 | $33,529 | $85,400 | 43.4% | 33.3% | 28.2% | 4 | 2,783 | 100% of its land |
| 46376 | Schneider | 319 | 141 | $64,205 | $187,500 | 85.8% | 30.5% | 44.0% | — | — | 100% of its land |
| 46377 | Shelby | 45 | 45 | $38,958 | — | 60.0% | 0.0% | 0.0% | — | — | 100% of its land |
A ZIP code is listed for Lake County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- Hammond — 76,768 residents · 5 ZIP codes
- Gary — 68,113 residents · 8 ZIP codes
- Portage — 38,082 residents · 2 ZIP codes
- Merrillville — 36,476 residents · 2 ZIP codes
- Crown Point — 34,393 residents · 1 ZIP code
- Schererville — 29,701 residents · 2 ZIP codes
- Hobart — 29,558 residents · 2 ZIP codes
- East Chicago — 26,022 residents · 1 ZIP code
- Munster — 23,733 residents · 1 ZIP code
- Highland — 23,680 residents · 1 ZIP code
- St. John — 22,567 residents · 2 ZIP codes
- Dyer — 16,400 residents · 1 ZIP code
- Griffith — 16,273 residents · 1 ZIP code
- Cedar Lake — 15,295 residents · 1 ZIP code
- Lake Station — 13,185 residents · 1 ZIP code
- Lowell — 11,073 residents · 1 ZIP code
- Winfield — 7,816 residents · 1 ZIP code
- Lakes of the Four Seasons — 7,402 residents · 1 ZIP code
- Whiting — 4,532 residents · 1 ZIP code
- New Chicago — 2,225 residents · 2 ZIP codes
- Lake Dalecarlia — 1,169 residents · 2 ZIP codes
- Wheeler — 283 residents · 2 ZIP codes
- Schneider — 230 residents · 1 ZIP code
- Shelby — 164 residents · 2 ZIP codes
Rankings
- Richest ZIP codes in Lake County — 26 ZIP codes ranked
- ZIP codes with the highest home values in Lake County — 26 ZIP codes ranked
- ZIP codes with the highest homeownership in Lake County — 26 ZIP codes ranked
- ZIP codes with the most families with kids in Lake County — 26 ZIP codes ranked
- ZIP codes with the most new movers in Lake County — 26 ZIP codes ranked
- Youngest ZIP codes in Lake County — 26 ZIP codes ranked
- Oldest ZIP codes in Lake County — 26 ZIP codes ranked
- Fastest-growing ZIP codes in Lake County — 26 ZIP codes ranked
Price a mailing to Lake County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Lake County, IN?
- 46307, 46410, 46342, 46312, 46375, 46321, 46322, 46311, 46323, 46324, 46356, 46373, 46319, 46303, 46408, 46404, 46320, 46405, 46394, 46403, 46327, 46341, 46406, 46407, 46409, 46402, 46376 and 46377. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Lake County?
- 500,379 residents in 195,130 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Lake County?
- $71,493 for the county as a whole. Its ZIP codes range from $28,526 (46407) to $127,146 (46373).
- Which Lake County ZIP code has the highest median household income?
- 46373, at $127,146, among ZIP codes with at least 1,000 residents. See the full ranking of Lake County ZIP codes by income.
- How many carrier routes and mailboxes are in Lake County?
- For the 26 of 28 ZIP codes in EDDM2GO's stored route library: 367 carrier routes reaching 212,531 residential and 12,182 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.