Didn’t pay attention to what community I was in! In fairness, the original post mentioned square miles.

For the Europeans: in a parking lot of 238 million Fiat Pandas (1995 model year) packed bumper-to-bumper and mirror to mirror, there’s a landmine under every 158th car.

(453 (sq mi)) / 1,500,000 = 0.19328 acres

For visualisation, that’s one landmine per median-sized suburban lot over an area a little less than than 1/3 of Rhode Island.