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US ZIP Code Profile

ZIP Code 71418
Columbia, Louisiana

ZIP code 71418 is in Columbia, located in Caldwell County, Louisiana. Its 2020 Census population was 5,625. The estimated median adjusted gross income per tax return is $39,955, and about 4% of filers report $200,000 or more.

2020 Population
5,625
Census ZCTA
County
Caldwell
FIPS 22021
Median income (est.)
$39,955
IRS SOI 2022
Land Area
342.865 mi²
+ 12.118 mi² water

01Location & Geography

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

Primary CityColumbia, LA
CountyCaldwell County (FIPS 22021)
StateLouisiana (FIPS 22)
Census Region / DivisionSouth Region · West South Central Division
Coordinates32.153954, -92.06677
Land / Water Area342.865 mi² land · 12.118 mi² water

02Income & Economics

Distribution of the 2,150 individual tax returns filed in 71418 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
34.4%
$25K–$50K
26.1%
$50K–$75K
14.0%
$75K–$100K
8.8%
$100K–$200K
12.6%
$200K+
4.2%
The $200,000+ bracket accounts for 23% of 71418's total adjusted gross income, from 4% of returns — a concentration that drives the gap between the median ($39,955) 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 71418's IRS income metrics, 2020–2022.

Median income (2021→2022)
$39,955
▲ 8.4%
Filers earning $200K+
4.2%
▲ 0.2 pt
Total filers
2,150
▼ 3.6%
GET /zipc/v2/zipcodes/71418/soi?year=… $35K 2020 $37K 2021 $40K 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 71418 ZCTA.

2000
6,729
 
2010
6,295
▼ -6.4%
2020
5,625
▼ -10.6%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number211872
City AliasesBanks Springs, Bellview, Big Ridge, Brownville, Burroughs, Columbia, Columbia Heights, Copenhagen, Duty Ferry, Eastside, Hearn Island, Hebert, Longlake, Riverton, Vixen

06Frequently Asked Questions

What county is ZIP code 71418 in?

ZIP code 71418 is in Caldwell County, Louisiana (county FIPS code 22021).

What city is ZIP code 71418?

The primary USPS city for 71418 is Columbia, LA.

What is the population of ZIP code 71418?

The 2020 Census population of 71418 was 5,625 residents.

What is the median income in ZIP code 71418?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 71418 is about $39,955, with around 4% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.