A Regional Parenting Magazine (RPM) is a publication that caters to parents and families in a specific geographic area. For example,
Kansas City Parent, my local publication, distributes their magazine all over the
Kansas City metropolitan area, which is huge and covers two states!
The articles in RPMs range from how to handle newborn sleep issues to how to deal with too many activities and your middle schooler to how to deal with a surly teenager to how to deal with living with an aging parent. Many also have special separate issues dedicated to babies, special needs, teens, etc.
RPMs depend on freelancers to fill their pages with articles, essays, how-tos, etc., usually on a monthly basis, but sometimes bi-monthly or quarterly.
They make most of their money from advertisers and give out their magazine for free, which means pay to writers is usually low ($15-200 per article in general, depending on advertising income and subscriptions), and they need a steady diet of new and reprint articles, listicles (combination of an article and a list) and essays.