信阳各县车牌号序号 1、信阳各县车牌号序号具体如下：罗山县：豫S·2。潢川县：豫S·3。固始县：豫S·4。光山县：豫S·5。淮滨县：豫S·6。息县：豫S·7。商城县：豫S·8。新县：豫S·9。浉河区：...
