St. Tammany Parish, Louisiana — 2026 Loan Limits & Market Data

St. Tammany Parish is a mid-sized county in Louisiana with a population of approximately 277,615 residents spread across 1,124 square miles. The county is a suburban area with a moderate population density of 247 residents per square mile, which shapes both the local housing market and the types of properties available to buyers.

For 2026, the conforming loan limit in St. Tammany Parish is $832,750 for a single-family home, which is the national baseline. FHA borrowers can access loans up to $541,287 for a one-unit property. These limits determine the maximum loan amount available through conventional and government-backed financing before buyers would need to seek jumbo loans, which carry different qualification requirements and typically require higher down payments.

St. Tammany Parish's suburban and semi-rural character means buyers can find a range of property types, from newer subdivisions to established neighborhoods and larger-lot properties. The county includes 18 ZIP codes with varying market conditions. Reviewing specific ZIP codes can reveal differences in median prices, available inventory, and how quickly homes are selling across different parts of the county.