Ja idę na wieś.

Yes, you can very naturally say Idę na wieś.

Polish often drops subject pronouns because the verb ending already shows the subject. In idę, the ending -ę means I. So:

• Idę na wieś = neutral, everyday
• Ja idę na wieś = more emphatic, contrastive, or expressive

For example:

• Ja idę na wieś, a on zostaje w mieście.
  I’m going to the countryside, and he’s staying in the city.

So ja is not wrong at all; it just adds emphasis.

Idę is the 1st person singular present form of the verb iść.

So:

• iść = to go
• idę = I go / I am going

This verb is a bit irregular, which is why iść and idę do not look very similar. Some present-tense forms are:

• idę = I go
• idziesz = you go
• idzie = he/she/it goes
• idziemy = we go
• idziecie = you go
• idą = they go

This is one of the most common questions in Polish.

Very roughly:

• iść / idę = going in one specific direction, one trip, right now or as a planned trip
• chodzić / chodzę = going habitually, repeatedly, or in no single direction

So:

• Idę na wieś. = I’m going to the countryside / I’m heading there.
• Chodzę na wieś latem. = I go to the countryside in summer / I tend to go there.

A useful beginner rule is:

• iść = one concrete journey
• chodzić = repeated or habitual going

Literally, iść is the verb of motion associated with going on foot.

So in careful usage:

• Idę na wieś. = I’m going to the countryside, probably on foot / I’m heading there
• Jadę na wieś. = I’m going to the countryside by vehicle

If you are going by car, bus, or train, jadę is usually the better choice.

That said, in some everyday contexts, people may use idę a bit more loosely when the exact means of transport is not important. But for learners, the safest distinction is:

• idę = go on foot
• jadę = go by vehicle

Because na wieś is the normal idiomatic expression for going to the countryside or out to a village/rural area.

In Polish, some destinations use do, and others use na. This is not always fully logical from an English perspective; it is often just how Polish expresses a given idea.

Compare:

• do miasta = to the city
• do domu = home / to the house
• na wieś = to the countryside
• na pocztę = to the post office
• na koncert = to a concert

Do wsi is possible, but it usually sounds more like to a particular village as a specific settlement.
Na wieś is the standard way to express the broader idea of going out to the country.

In na wieś, the noun wieś is in the accusative because the phrase shows motion toward a destination.

A very important contrast is:

• na wieś = to the countryside → motion
• na wsi = in the countryside / in the village → location

So:

• Idę na wieś. = I’m going to the countryside.
• Jestem na wsi. = I’m in the countryside.

Why does wieś stay wieś in the accusative?
Because for this feminine noun, the nominative singular and accusative singular have the same form:

• nominative: wieś
• accusative: wieś
• locative: wsi

It can mean both, depending on context.

• wieś = a village
• na wsi / na wieś often refers more broadly to the countryside or rural life

So in this sentence, na wieś often feels more natural in English as to the countryside. But depending on the situation, it could also mean going to a village, for example to visit family there.

In other words, the Polish phrase is a little broader than a single fixed English word.

Yes. Polish word order is fairly flexible.

The most neutral versions are:

• Idę na wieś.
• Ja idę na wieś.

If you change the order, you change the emphasis:

• Na wieś idę. = It’s to the countryside that I’m going.
• Ja idę na wieś. = I am the one going to the countryside.

Because Polish uses endings more than English does, word order is often about focus and style, not basic grammar alone.

Grammatically, idę is present tense.

In this sentence, it usually means something like:

• I’m going
• I’m on my way
• I’m heading to the countryside

But in Polish, present-tense forms can also be used for a planned near future, especially with a time expression:

• Jutro idę na wieś. = I’m going to the countryside tomorrow.

So without extra context, Idę na wieś is most naturally understood as a present action or an immediate plan.

A rough guide is:

• Ja ≈ ya
• idę ≈ EE-deh with a lightly nasal final vowel
• na ≈ nah
• wieś ≈ vyesh, but with a softer final sound than English sh

A few useful pronunciation notes:

• Polish j sounds like English y in yes
• Polish w sounds like English v
• ś is a soft consonant, softer than English sh
• final ę is often only lightly nasal in normal speech

So the whole sentence sounds roughly like:

ya EE-deh nah vyesh

That is only an approximation, but it is a helpful starting point.