Counting points in shapefile within polygons of another shapefile using ArcGIS Desktop?

I'm creating a map with two shapefiles:

1. A polygon of counties


2. Points of cities

I used the function Intersect to group the cities in each county.

I'm trying to get the number of cities in each county to show up in the legend.

For example, in county A there are 16 cities, in county B there are 7 cities and so on.

I'm trying to create a choropleth map that shows the number of cities in each county.