Well, most of the houses in South Orange and Maplewood are above the median value in the article. I expect many of us pay 2x or 3x the median amount. The better comparison is per $100,000 of value.
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I just came across this article:
https://finance.yahoo.com/news/states-highest-lowest-property-taxes-082902418.html
How does your property bill compare with the median for NJ?