Can I take my children with me when I separate?

You don't say how old the children are or if they are in school.  If they are younger and not in school, and there is no order about placement, you can try.  Your husband would be able to file the divorce action in your county of residence, and he would be able to request that the children be returned to that county. Also, if you take the children and relocate, you will have to wait 30 days before you can file your divorce action. Finally, your taking the children from their father and their life that they know may not look good to any guardian ad litem that might be appointed in your case.