रेलवे काउंटर वहाँ है।

A simple breakdown is:

• रेलवे = railway
• काउंटर = counter
• वहाँ = there
• है = is

So the structure is literally something like Railway counter there is.

Hindi often puts the verb at the end of the sentence. So instead of:

• The railway counter is there.

Hindi says:

• रेलवे काउंटर वहाँ है।
• literally: Railway counter there is.

This is very normal in Hindi. The final verb position is one of the biggest word-order differences from English.

है is the present-tense form of the verb होना (to be). Here it means is.

In this sentence, है agrees with a singular subject, which is काउंटर.

Examples:

• यह कमरा बड़ा है। = This room is big.
• दुकान वहाँ है। = The shop is there.

So in your sentence, है is just the normal is at the end.

Here वहाँ means there in the location sense: in that place.

So:

• वहाँ = there
• यहाँ = here

Important: this is not the English existential there as in There is a counter.
In your sentence, वहाँ is simply giving a location:

• The railway counter is there.

Hindi does not have articles like English a, an, and the.

So रेलवे काउंटर can mean:

• the railway counter
• a railway counter

Which one is meant depends on context.

That is very normal in Hindi. Learners often look for a word matching the, but usually there just isn't one.

They are loanwords, and yes, they are very common in modern Hindi.

Hindi uses many everyday borrowed words from English, especially for:

• transport
• offices
• technology
• business

So expressions like रेलवे, काउंटर, स्टेशन, टिकट, and प्लेटफ़ॉर्म are all very natural in conversation.

A simple pronunciation guide is:

• रेलवे ≈ rel-way
• काउंटर ≈ kaun-ter
• वहाँ ≈ vahaan or wahaan
• है ≈ hai (like high, but shorter)

A rough full pronunciation is:

relway kauntar vahaan hai

A more careful transliteration would be:

relvee kaunṭar vahā̃ hai

The nasal sound in वहाँ is important, though in casual speech learners will often hear something close to वहां / wahaan.

Because वहाँ is already a complete location adverb meaning there.

So:

• वहाँ है = is there

You only need a postposition if you want a more specific meaning, such as:

• वहाँ पर है = is there / is over there
• स्टेशन में है = is in the station
• काउंटर पर है = is at/on the counter

In your sentence, वहाँ alone is enough.

Yes. वहाँ पर is also correct and common.

Compare:

• रेलवे काउंटर वहाँ है।
• रेलवे काउंटर वहाँ पर है।

Both mean the same thing.
Adding पर can sound slightly more explicit or natural in some contexts, but it is not required.

In actual usage, काउंटर is generally treated as masculine.

In this sentence, you do not really see that clearly, because the present singular copula है does not show gender.

But if you used an adjective, gender could become visible. For example:

• बड़ा काउंटर = big counter
  not usually बड़ी काउंटर

So for practical learning purposes, treat काउंटर as masculine.

In standard spoken or written Hindi, you normally keep है in a full sentence like this:

• रेलवे काउंटर वहाँ है।

If you drop it:

• रेलवे काउंटर वहाँ।

that sounds incomplete in ordinary speech.

You may sometimes see the verb omitted in:

• headlines
• signs
• very casual shorthand

But as a learner, it is safest to include है.

Yes, it is natural.

Depending on context, a speaker might also say:

• रेलवे का काउंटर वहाँ है।
• टिकट काउंटर वहाँ है।
• रेलवे टिकट काउंटर वहाँ है।

These versions may be more specific, especially if the speaker means the railway ticket counter.

But रेलवे काउंटर वहाँ है। is perfectly understandable and natural.

Both can refer to there, but they are not always used in exactly the same way.

• वहाँ = there, a location
• उधर = over there / in that direction / that side

So:

• रेलवे काउंटर वहाँ है। = The railway counter is there.
• रेलवे काउंटर उधर है। = The railway counter is over there / that way.

If you are pointing someone in a direction, उधर is often very natural.
If you are simply stating location, वहाँ is very common.

Yes, sometimes.

The neutral order is:

• रेलवे काउंटर वहाँ है।

But Hindi can move things around for emphasis or style, for example:

• वहाँ रेलवे काउंटर है।

That might sound more like:

• There is the railway counter there / Over there is the railway counter

However, for learners, the original sentence is the safest and most straightforward version.