There are 140 prime suburbs that have been identified as ideal for investors with rents high enough to cover mortgage repayments.

Analysis by PropTrack says investors are re-entering the market to capitalise on rising weekly rents and yields. It says in New South Wales there are a range of major regional towns offering great investment opportunities for investors.

The top location is South Lismore which has a median house price of just $280,000, monthly advertised rent of $2000 and monthly mortgage repayments of $1418.

In Victoria, a unit in Carlton has the biggest price differential between rents achieved and mortgage repayments. The monthly advertised rent is $2200 and mortgage repayments are $1976. In Queensland regional mining towns offer the biggest difference between rents and mortgage repayment, although areas focused on the resources industry can be volatile and a risky investment. In Moranbah unit monthly rents are $2600 and mortgage repayments are $1444.

In South Australia, regional Roxby Downs has the biggest difference between monthly rents, $1,560 and mortgage repayments which are $1,431. In Western Australia, it is Baynton where the monthly rent is $5600 and monthly mortgage repayment is $3458.