How to specify more than one areaServed (eg multiple municipalities) for a LocalBusiness? - schema.org

Question

A lot of businesses serve multiple municipalities.
How should this be expressed in https://schema.org/areaServed (JSON LD)?
Eg as per https://schema.org/Service:
<script type="application/ld+json">
{
"#context": "https://schema.org/",
"#type": "Service",
"serviceType": "Weekly home cleaning",
"provider": {
"#type": "LocalBusiness",
"name": "ACME Home Cleaning"
},
"areaServed": {
"#type": "City",
"name": "New York"
},
... ?
</script>
Should it be:
"areaServed": {
"#type": "City",
"name": "New York"
},
"areaServed": {
"#type": "City",
"name": "Buffalo"
},
"areaServed": {
"#type": "City",
"name": "Syracuse"
},
Or something like:
"areaServed": {
"#type": "City",
"name": "New York",
"name": "Buffalo",
"name": "Syracuse"
},
Or something else?

Answer 1

According to the Schema documentation, the property areaServed can have values expected to be one of these types:
AdministrativeArea
GeoShape
Place
Text
There is no type City here as you indicate in your example. So I used type Place for my suggestion for you (alternative is the type AdministrativeArea):
{
"#context": "https://schema.org/",
"#type": "Service",
"serviceType": "Weekly home cleaning",
"provider": {
"#type": "LocalBusiness",
"name": "ACME Home Cleaning"
},
"areaServed": {
"#type": "Place",
"name":[ "New York","Buffalo"]
}
}
To use an alternative just change the name to type.

Answer 2

City is a "More specific Type" of "AdministrativeArea" according to schema.org documentation, so nothing wrong with using that.
(unfortunately haven't got enough points to write this as a comment under nikant25s comment but thought it was important to mention)
I would write something like this:
"areaServed": [{
"#type": "City",
"name": “New York”,
"sameAs": "https://en.wikipedia.org/wiki/New_York_City"
},
{
"#type": "City",
"name": “Buffalo”,
"sameAs": (the Wiki-page for the right Buffalo)
}],
Since there are a lot of cities with the same name it’s probably good to use the sameAs property to specify which one you mean :)