Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — RANKINGS/LA/SMALLEST-AREA

Smallest ZIP Codes in Louisiana by Land Area

What this measures. Land area of the Census tabulation area, smallest first. These are almost always dense urban ZIP codes covering a few city blocks. Source: Census Gazetteer, data release 2026-10-12.

# ZIP City County Land area
1 70163 New Orleans Orleans 0.00 sq mi
2 70629 Lake Charles Calcasieu 0.00 sq mi
3 70139 New Orleans Orleans 0.01 sq mi
4 70825 Baton Rouge East Baton Rouge 0.01 sq mi
5 70609 Lake Charles Calcasieu 0.01 sq mi
6 71242 Forest West Carroll 0.03 sq mi
7 70575 Perry Vermilion 0.03 sq mi
8 71230 Crowville Franklin 0.04 sq mi
9 70786 Watson Livingston 0.05 sq mi
10 70457 Saint Benedict St. Tammany 0.05 sq mi
11 70340 Amelia St. Mary 0.05 sq mi
12 71209 Monroe Ouachita 0.05 sq mi
13 71066 Powhatan Natchitoches 0.06 sq mi
14 71212 Monroe Ouachita 0.07 sq mi
15 71475 Slagle Vernon 0.07 sq mi
16 71279 Start Richland 0.08 sq mi
17 70801 Baton Rouge East Baton Rouge 0.11 sq mi
18 70558 Milton Lafayette 0.12 sq mi
19 70402 Hammond Tangipahoa 0.12 sq mi
20 71359 Pineville Rapides 0.13 sq mi
21 70580 Reddell Evangeline 0.14 sq mi
22 71345 Lebeau St. Landry 0.15 sq mi
23 70310 Thibodaux Lafourche 0.19 sq mi
24 71009 Blanchard Caddo 0.20 sq mi
25 70640 Fenton Jefferson Davis 0.21 sq mi
26 70451 Natalbany Tangipahoa 0.23 sq mi
27 70803 Baton Rouge East Baton Rouge 0.23 sq mi
28 70038 Boothville Plaquemines 0.25 sq mi
29 71330 Echo Rapides 0.29 sq mi
30 70050 Empire Plaquemines 0.37 sq mi
31 71272 Ruston Lincoln 0.37 sq mi
32 71426 Fisher Sabine 0.37 sq mi
33 70148 New Orleans Orleans 0.40 sq mi
34 71415 Clarks Caldwell 0.43 sq mi
35 71497 Natchitoches Natchitoches 0.50 sq mi
36 70813 Baton Rouge East Baton Rouge 0.51 sq mi
37 70391 Paincourtville Assumption 0.52 sq mi
38 71428 Flora Natchitoches 0.52 sq mi
39 70836 Baton Rouge East Baton Rouge 0.53 sq mi
40 71233 Delta Madison 0.59 sq mi
41 70585 Turkey Creek Evangeline 0.60 sq mi
42 70519 Cade St. Martin 0.66 sq mi
43 70551 Leonville St. Landry 0.67 sq mi
44 71021 Cullen Webster 0.68 sq mi
45 71414 Clarence Natchitoches 0.69 sq mi
46 71218 Archibald Richland 0.73 sq mi
47 70522 Centerville St. Mary 0.78 sq mi
48 71410 Calvin Winn 0.79 sq mi
49 70463 Sun St. Tammany 0.87 sq mi
50 70550 Lawtell St. Landry 0.90 sq mi

Showing the top 50 of 539 ZIP codes in Louisiana that have this figure and meet the threshold above. 70163 ranks 1st at 0.00 sq mi, against 0.90 sq mi in 50th place.

Other rankings for Louisiana

Cite this page

zipcodes.pro. “Smallest ZIP Codes in Louisiana by Land Area.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/rankings/la/smallest-area

Underlying data is public domain or openly licensed — sources, vintages and licences.