Well, 4 of the kids in Lakewood live in my house. There are many many more, just show up in front of any of the local grade schools around 8 am, any middle school around 8:30 and highschool around 7:30 and it will be clear there are lots of kids!
Speaking of schools, the schools are part of our reason for moving here. We love the school district and they have been wonderful with our children.
You also likely will enjoy other things about Lakewood if you are looking to raise your kids here. Everything is close and so running errands takes less time and gives you more time at home. Schools and parks are nearby. There are many many schools in Lakewood and they are well placed in relation to the population who goes there. It is beautiful here and kids love being out of doors, it's a nice place for that.
You will also find the Lakewood YMCA, Lakewood community center, Fort Steilcoom park, the Towne Center, the Lakewood library and much more here.
As far as a safe place to live, we moved here to be in a better place and I feel safer here than anywhere we have lived in the last 20 years or so. With that said, there are some real differences in the neighborhoods, be sure you have a realtor who will help you with doing a good neighborhood review.