GIS Map

St. John the Baptist Parish, Louisiana GIS Map

This GIS map of St. John the Baptist Parish, Louisiana (LA) shows the official Census county boundary (FIPS 22095), with federal layers you can switch on for FEMA flood zones, USGS elevation contours and hillshade, NLCD land cover, and school district lines.

St. John the Baptist Parish has a population of about 40,743 (U.S. Census Bureau, 2020-2024 ACS 5-year estimate) and a land area of 214.5 square miles. Use the inspect tool to read coordinates, elevation and the layers under any point.

State
Louisiana (LA)
Population
40,743
Land area
214.5 sq mi
Density
190 / sq mi
Coordinates
30.1441, -90.4910
FIPS code
22095

St. John the Baptist Parish Demographics

Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.

Population

40,743

Households

15,152

Median household income

$66,630

Median age

40.1 years

Median home value

$193,200

Median gross rent

$1,334/mo

Owner-occupied homes

77.5%

Bachelor's degree or higher

18.2%

Below poverty level

14.4%

Land area

214.5 sq mi

Population density

190 / sq mi

Louisiana rankings

Richest citiesMost expensive homesMost affordable homesHighest rentMost educatedHighest poverty rateMost densely populatedLargest by population

St. John the Baptist Parish Population Growth

Source: U.S. Census Bureau, 2010 Census and Population Estimates Program (Vintage 2024: April 2020 estimates base and July 1, 2024 estimate).

2010 Census

45,924

April 2020 (estimates base)

42,472

July 2024 estimate

39,694

Change 2010-2020

-7.5%

Change 2020-2024

-6.5%

Natural Hazard Risk in St. John the Baptist Parish

FEMA National Risk Index ratings for St. John the Baptist Parish, compared with all U.S. counties.

Overall risk

Relatively Moderate

Score 81.5 of 100

Expected annual loss

$46,397,986

Buildings, population & agriculture

Social vulnerability

Relatively Moderate

Susceptibility to hazard impacts

Community resilience

Very High

Ability to prepare & recover

Risk by Hazard

  • HurricaneRelatively High
  • DroughtRelatively Moderate
  • TornadoRelatively Moderate
  • Coastal FloodingRelatively Moderate
  • Heat WaveRelatively Low
  • LightningRelatively Moderate
  • Inland FloodingRelatively Low
  • Cold WaveRelatively Low
  • HailRelatively Low
  • Ice StormRelatively Low
  • EarthquakeVery Low
  • Winter WeatherRelatively Low
  • Strong WindRelatively Low
  • WildfireVery Low
  • LandslideVery Low

Source: FEMA National Risk Index (December 2025 release). County-level ratings are relative to other U.S. counties and are not a property-specific assessment.

Environmental Conditions in St. John the Baptist Parish, Louisiana

Radon potential, monitored air quality and current drought status for St. John the Baptist Parish, Louisiana, from the Environmental Protection Agency and the U.S. Drought Monitor.

Radon potential

Zone 3

low radon potential

EPA predicts an average indoor level below 2 pCi/L, so the EPA still recommends testing, because elevated radon can occur anywhere.

Air quality (2024)

Median AQI 36Good

2 days at unhealthy for sensitive groups or worse.

90th percentile 51, peak 105 across 359 monitored days.

Drought status

Moderate drought in 83.2% of the county

Drought Severity and Coverage Index 183.2 of 500.

  • D0 Abnormally dry16.799999999999997%
  • D1 Moderate drought83.2%

Map of 13 October 2026.

Sources: EPA Map of Radon Zones (September 2025), EPA Air Quality Index (2024) and the U.S. Drought Monitor. A radon zone is a regional planning tool, not a prediction for any individual home — the EPA recommends testing every home regardless of zone. Air quality is shown only for counties that host an EPA monitor. Drought figures describe one weekly map, not a long-term climate average. Compare counties in Louisiana.

GIS Data for St. John the Baptist Parish, LA

The St. John the Baptist Parish GIS map on this page loads live federal layers in your browser, so you can check flood zones, terrain, land cover and district boundaries anywhere in St. John the Baptist Parish without a separate GIS login. All of the St. John the Baptist GIS data below is drawn from public U.S. government sources.

Layers you can turn on

  • FEMA flood zones

    National Flood Hazard Layer — flood insurance rate map zones and floodways.

  • Elevation contours and hillshade

    USGS 3DEP terrain, so you can read slope and relief across the county.

  • Land cover

    NLCD land cover classes — forest, developed, wetland and water.

  • School districts

    Census TIGER unified and elementary school district boundaries.

  • ZIP code and county boundaries

    Census TIGER ZCTA and county boundary lines.

Map tools

  • Measure distance and area

    Draw a line or polygon to get length in miles or area in acres.

  • Sketch and annotate

    Add points, lines and shapes on top of the map.

  • Inspect any point

    Click the map to read coordinates, elevation and the layers under your cursor.

  • Download the map

    Save the current view as a PNG image.

Where the data comes from

County boundaries come from the U.S. Census Bureau TIGER/Line program, flood zones from FEMA's National Flood Hazard Layer, terrain from the USGS 3D Elevation Program, land cover from the Multi-Resolution Land Characteristics Consortium, and demographics from the American Community Survey.

Property records and tax maps in St. John the Baptist Parish

Most people who look up St. John the Baptist Parish GIS data are after parcel-level records: who owns a property, what it last sold for, and what it is assessed at. Those records are kept locally, not federally, so they are not part of this map. St. John the Baptist Parish property and tax map data lives with the county's own records office, and what that office is called varies by state — Texas counties run an appraisal district (usually searched as a “CAD”), Kentucky uses a Property Valuation Administrator (PVA), and most other states use a county assessor, auditor or tax office. Start with that office for a deed, a tax map number or a parcel boundary; use the map above for flood zones, elevation and land cover on the same land.

St. John the Baptist Parish FAQ

What state is St. John the Baptist Parish in?

+

St. John the Baptist Parish is a county in Louisiana (LA).

What is the population of St. John the Baptist Parish?

+

St. John the Baptist Parish, Louisiana has a population of about 40,743, according to the U.S. Census Bureau American Community Survey.

How big is St. John the Baptist Parish?

+

St. John the Baptist Parish covers about 214.5 square miles of land, with a population density of roughly 190 people per square mile.

What is the FIPS code for St. John the Baptist Parish?

+

The FIPS county code for St. John the Baptist Parish, Louisiana is 22095. It is used to identify the county in federal datasets such as Census TIGER and FEMA flood maps.

What is the median household income in St. John the Baptist Parish?

+

The median household income in St. John the Baptist Parish, Louisiana is about $66,630 per year.

What is the radon zone for St. John the Baptist Parish?

+

St. John the Baptist Parish is in EPA radon Zone 3, meaning the EPA predicts an average indoor radon level below 2 pCi/L. In this zone the EPA still recommends testing, because elevated radon can occur anywhere. The EPA is clear that a radon zone is a regional planning tool and not a prediction for any individual home.

What is the air quality in St. John the Baptist Parish?

+

Across 2024, the EPA monitor covering St. John the Baptist Parish recorded a median Air Quality Index of 36 (Good) and a 90th percentile of 51, with a peak of 105. 2 days reached unhealthy for sensitive groups or worse. Only counties that host an EPA monitor have these figures.

Is St. John the Baptist Parish in a drought?

+

As of the 13 October 2026 U.S. Drought Monitor map, moderate drought covers 83.2% of St. John the Baptist Parish, and the county's Drought Severity and Coverage Index is 183.2 out of 500.

What is St. John the Baptist GIS?

+

St. John the Baptist GIS usually refers to the parish's own parcel and zoning mapping system, which St. John the Baptist Parish publishes itself. This page is a separate, free viewer: it draws federal GIS layers — FEMA flood zones, USGS elevation, NLCD land cover and Census boundaries — over the St. John the Baptist Parish boundary, with no login required.

What GIS data is available for St. John the Baptist Parish?

+

The St. John the Baptist Parish map loads federal GIS layers directly in your browser: FEMA National Flood Hazard Layer flood zones, USGS 3DEP elevation contours and hillshade, NLCD land cover, Census TIGER school district boundaries, and TIGER ZIP code and county boundary lines.

How do I check flood zones in St. John the Baptist Parish?

+

Open the St. John the Baptist Parish map, turn on the FEMA flood zones layer, and zoom in. The National Flood Hazard Layer shows flood insurance rate map zones and floodways. Flood zones only draw once you are zoomed in far enough.

How do I find the coordinates or elevation of a spot in St. John the Baptist Parish?

+

Use the inspect tool on the St. John the Baptist Parish map and click any point. It reads back the coordinates, elevation and the layers under your cursor. You can also measure distance and area by drawing a line or polygon.

Data sources for St. John the Baptist Parish, Louisiana

Every figure on this page comes from a published government dataset. Each source is listed with its release date so you can check the number or cite it directly.

  • American Community Survey 5-year estimates

    U.S. Census Bureau · 2020-2024 · population, income, housing, education and poverty figures

  • Gazetteer Files

    U.S. Census Bureau · 2024 · place coordinates, land area and the county/place/ZIP crosswalk

  • TIGER/Line Shapefiles

    U.S. Census Bureau · 2024 · county, ZIP Code Tabulation Area and school district boundaries

  • National Flood Hazard Layer

    Federal Emergency Management Agency · current effective Flood Insurance Rate Maps · flood zones, floodways and base flood elevations

  • National Risk Index

    Federal Emergency Management Agency · v1.20, December 2025 · county natural hazard risk, expected annual loss, social vulnerability and resilience

  • 3D Elevation Program (3DEP)

    U.S. Geological Survey · current · elevation contours, shaded relief and point elevations

  • National Land Cover Database

    Multi-Resolution Land Characteristics Consortium · NLCD 2021 · land cover classes such as developed, forest, crop and water

  • Map of Radon Zones

    U.S. Environmental Protection Agency · September 2025 · the county radon zone (1, 2 or 3) and its predicted indoor radon potential

  • Air Quality Index annual summary by county

    U.S. Environmental Protection Agency · 2024 · median, 90th percentile and peak AQI, and days at unhealthy levels, for counties with an EPA monitor

  • U.S. Drought Monitor

    National Drought Mitigation Center, USDA and NOAA · weekly, current map · the share of county area in each drought category and the Drought Severity and Coverage Index

  • ArcGIS basemaps

    Esri · current · streets, satellite, topographic and dark gray basemap tiles

Citing this page

GIS Map, “St. John the Baptist Parish, Louisiana GIS Map”, https://gismap.land/county/louisiana/st-john-the-baptist. Figures from the datasets listed above.

How GIS Map sources and labels its data

Local notes for St. John the Baptist Parish, LA

Questions and local knowledge from people who know the area. Every note is read before it appears here.