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US ZIP Code Profile

ZIP Code 70788
White Castle, Louisiana

ZIP code 70788 is in White Castle, located in Iberville County, Louisiana, within the Baton Rouge metro area. Its 2020 Census population was 3,692. The estimated median adjusted gross income per tax return is $34,884, and about 3% of filers report $200,000 or more.

2020 Population
3,692
Census ZCTA
County
Iberville
FIPS 22047
Median income (est.)
$34,884
IRS SOI 2022
Land Area
107.571 mi²
+ 3.291 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityWhite Castle, LA
CountyIberville County (FIPS 22047)
StateLouisiana (FIPS 22)
Metro Area (MSA)Baton Rouge, LA Metro Area (12940)
Census Region / DivisionSouth Region · West South Central Division
Coordinates30.140491, -91.17284
Land / Water Area107.571 mi² land · 3.291 mi² water

02Income & Economics

Distribution of the 1,560 individual tax returns filed in 70788 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
39.1%
$25K–$50K
27.6%
$50K–$75K
12.2%
$75K–$100K
5.8%
$100K–$200K
12.2%
$200K+
3.2%
The $200,000+ bracket accounts for 22% of 70788's total adjusted gross income, from 3% of returns — a concentration that drives the gap between the median ($34,884) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 70788's IRS income metrics, 2020–2022.

Median income (2021→2022)
$34,884
▲ 4.7%
Filers earning $200K+
3.2%
▼ 0.5 pt
Total filers
1,560
▼ 4.9%
GET /zipc/v2/zipcodes/70788/soi?year=… $33K 2020 $33K 2021 $35K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 70788 ZCTA.

2000
4,423
 
2010
4,051
▼ -8.4%
2020
3,692
▼ -8.9%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortC
USPS Finance Number219308
City AliasesWhite Castle, Bayou Goula

06Frequently Asked Questions

What county is ZIP code 70788 in?

ZIP code 70788 is in Iberville County, Louisiana (county FIPS code 22047).

What city is ZIP code 70788?

The primary USPS city for 70788 is White Castle, LA.

What metro area (MSA) is 70788 in?

70788 is part of the Baton Rouge, LA Metro Area (MSA code 12940).

What is the population of ZIP code 70788?

The 2020 Census population of 70788 was 3,692 residents.

What is the median income in ZIP code 70788?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 70788 is about $34,884, with around 3% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.