Property tax in St. Tammany Parish, Louisiana

By Brent Chudoba, editor Updated September 23, 2026

The median property tax bill in St. Tammany Parish, Louisiana is $2,028 a year, which is about 0.71% of the county's median home value of $284,000. That effective rate is higher than the typical Louisiana county (0.43%) and lower than the national median (0.81%). These are American Community Survey 5-year estimates (2024); your own bill depends on your home's assessed value and any exemptions.

Estimate the property tax on a home in St. Tammany Parish

Enter a home's market value for a ballpark at St. Tammany Parish's average effective rate of 0.71% (Census). The real bill depends on the home's assessed value, the millage where it sits and any exemptions.

Home market value

Estimated property tax: $2,016 / year

Property tax in St. Tammany Parish at a glance

St. Tammany Parish, Louisiana property tax (Census ACS, reviewed September 23, 2026)
Measure	Value
Median annual property tax	$2,028
Median home value	$284,000
Effective tax rate	0.71%
Typical Louisiana county rate	0.43%
National median county rate	0.81%

Effective rate = median real estate taxes paid divided by median home value. Source: U.S. Census Bureau, American Community Survey 5-year estimates.

How does St. Tammany Parish compare in Louisiana?

Among Louisiana's 64 counties, St. Tammany Parish has the 2nd highest effective property-tax rate: 1 rank higher and 62 rank lower. That places it among the most heavily taxed counties in the state. Nationally, it ranks 1853rd of 3135 US counties by effective rate. See every Louisiana county ranked.

How much do homeowners in St. Tammany Parish actually pay?

The median is only the middle bill. Across St. Tammany Parish's 82,876 owner-occupied homes, 28% pay $3,000 or more a year in property tax, 46.8% pay at least $2,000, and 16.3% pay under $800. Another 7.5% report paying no property tax at all, which usually means an exemption covers the whole bill.

Annual property tax paid by St. Tammany Parish homeowners (Census ACS 2020-2024)
Annual bill	Homes	Share
Under $800	13,493	16.3%
$800 to $1,499	14,259	17.2%
$1,500 to $1,999	10,141	12.2%
$2,000 to $2,999	15,577	18.8%
$3,000 or more	23,181	28%
No property tax paid	6,225	7.5%

Owners with a mortgage pay a median of $2,191 and owners without one pay $1,734. Owners who have paid off a home have usually held it longer, and in states that cap how fast an existing owner's assessment can rise, long-held homes carry lower assessed values. Census table B25103.

How does the St. Tammany Parish property tax bill compare with local incomes?

The median property tax bill of $2,028 is about 2.2% of the median income of St. Tammany Parish homeowner households, $93,681 a year. That compares two middles, so a retiree in a long-held home can pay a far larger share. 78.9% of St. Tammany Parish's occupied homes are lived in by their owners; renters pay property tax too, just folded into rent.

Have property taxes gone up in St. Tammany Parish?

Yes. The median bill went from $1,744 in 2015-2019 to $2,028 in 2020-2024, a 16.3% rise. Over the same span the median home value moved 30%, from $218,500 to $284,000. Bills rose more slowly than values, which is what assessment caps and falling millage rates do: the county is taxing a smaller share of each home's worth.

Two Census ACS 5-year periods with no survey years in common, in each period's own dollars. A change counts only if it exceeds the combined 90% margin of error.

Property tax in counties next to St. Tammany Parish

St. Tammany Parish borders 8 counties, 2 of them across the state line.

St. Tammany Parish and its neighbors, highest effective rate first (Census ACS 2020-2024)
County	Effective rate	Median bill	Median home value
Orleans Parish, LA	0.83%	$2,606	$315,700
Hancock County, MS	0.71%	$1,583	$224,200
St. Tammany Parish, LA (this county)	0.71%	$2,028	$284,000
Pearl River County, MS	0.65%	$1,189	$182,300
Jefferson Parish, LA	0.52%	$1,312	$251,400
St. Bernard Parish, LA	0.47%	$961	$202,500
St. John the Baptist Parish, LA	0.45%	$877	$193,200
Tangipahoa Parish, LA	0.41%	$882	$212,900
Washington Parish, LA	0.33%	$507	$155,700

How is a home assessed in St. Tammany Parish?

Louisiana assesses homes at 10% of market value in every county, St. Tammany Parish included. How Louisiana assesses and reappraises homes.

Is there a homestead exemption in St. Tammany Parish?

Yes. Louisiana exempts the first $75,000 of market value of an owner-occupied home ($7,500 of assessed value), though it generally does not cover municipal taxes. That is the Louisiana rule, and it applies in St. Tammany Parish. Louisiana's exemptions and relief programs in full.

When are property taxes due in St. Tammany Parish?

One annual payment, due no later than December 31 and collected by the parish sheriff, or by the City of New Orleans in Orleans Parish. Unpaid taxes are delinquent on January 1 and accrue 1% per month in simple interest, with a 5% penalty added if the lien goes to auction.

That is the Louisiana rule. St. Tammany Parish issues and collects the bill, so the dates printed on your statement are the ones that bind you.

How to appeal your St. Tammany Parish property assessment

You contest the assessed value with the Parish assessor, then the parish Board of Review, then the Louisiana Tax Commission. The filing deadline is typically varies by parish, within a statutory window. That is the Louisiana rule; St. Tammany Parish sets the exact dates and forms. The Louisiana appeal process step by step.

Louisiana rules from primary state sources, reviewed September 7, 2026; sources on the Louisiana page.

Work out your own numbers

Sources

Median real estate taxes paid and median home value for St. Tammany Parish, Louisiana: U.S. Census Bureau, American Community Survey 5-year estimates (2020-2024), tables B25103, B25077, B25102, B25119 and B25003; the five-year comparison uses the 2015-2019 estimates. Neighboring counties: Census county adjacency file.