$340,000 buys the median home in Ketchikan right now. With 20% down, that's a $68,000 down payment and a $272,000 loan, set against a $70,000 median household income.
Ketchikan's 1.05% property tax rate runs below the 1.1% national average. That's $298/month on the median home here, not a rounding error against the mortgage payment.
No state income tax in Alaska means the $70,000 median household income stretches further than the same salary would in an income-tax state, which matters directly against a $2,211/month payment.
Day-to-day expenses in Ketchikan track at 120 against the national 100 baseline, above average once you look past the mortgage payment itself.
Ketchikan's median home price runs 18% lower than nearby Anchorage: $415,000 there versus $340,000 here.