City profile
Slidell, LA
St. Tammany Parish · Population 28,561
Slidell is a town in St. Tammany Parish, LA with about 28,561 residents and a typical home value near $218,000. It is 28 miles from New Orleans, LA, which shapes its climate, healthcare access and amenities.
Climate
Climate type
Humid subtropical
Winter avg
53°F
Summer avg
83°F
Sunny days / yr
216
Home prices & cost of living
Median home price
$217,700
Typical monthly housing
$1,282
Cost of living (100 = U.S.)
90
Taxes
- Property tax
- 0.55%
- State income tax (top)
- 3%
- Social Security
- Not taxed
- Pensions
- Partly exempt
- Sales tax (state + avg. local)
- 10.11%
FEMA natural hazard risk
Relatively High · county score 97/100
Top hazards: Hurricane, Heat wave, Lightning
Nearest major airport
35 mi to Louis Armstrong New Orleans International Airport (MSY)
Political lean (2024 county vote)
Leans Republican · 27% Democratic / 71% Republican
Community
Population
28,561
Black population
20.3%
County
St. Tammany Parish
Detailed crime figures are available for our 201 hand-researched cities.
2025–2026 trends
2026 market trends
- ▸More retirees are leaving LA than arriving, mostly over cost
- ▸Home insurance is very expensive or hard to get here — get quotes before you buy
- ▸Home prices are softening in 2026 — more room to negotiate
- ▸Climate/cost risks to check: hurricanes, flooding
Highlights
- About 28,561 residents
- Typical home value about $218,000
- 28 miles from New Orleans, LA
Trade-offs
- Scores for this place are estimated from Census data and the nearest major city
Figures are estimates from public sources (see How we match). Verify before making decisions.