Place Names and Their Prepositions

Ask an Icelander where they live and the answer comes wrapped in a preposition — í Reykjavík, á Akureyri, á Selfossi — and the preposition is not predictable from any rule you can apply on the spot. Reykjavík takes í ("in"); Akureyri, a town of similar size, takes á ("on"). You cannot reason your way to the right one; it is lexicalised — fixed per place, learned the way you learn a noun's gender. This page gives you the most important towns with their preposition baked in, shows how place names decline (because, unlike English, they change shape after til and frá), and then reveals the partial pattern that makes the chaos roughly half-learnable.

(This page is not the general í-versus-á rule for ordinary nouns — that's prepositions/i-and-a and choosing/i-vs-a-place. Here the point is the opposite: for place names the choice is idiosyncratic, memorised per name, not derived from a rule.)

"In Iceland" is á Íslandi

Start with the one every learner needs first and every learner gets wrong: "in Iceland" is á Íslandi — on Iceland, not in it. Iceland, like most islands, takes á. The dative form is Íslandi (the -i is the dative ending; Ísland is the bare nominative).

English speakers reliably try \í Íslandi by analogy with "in Iceland." It's wrong; the country takes á, and the noun appears in the dative Íslandi*.

The towns: memorise the preposition with the name

Here is the core reference. Each town comes with its preposition (use this in the location sense, "in/at X") and its genitive (the form after til "to" and possessive constructions). Learn the preposition as part of the name — í-Reykjavík, á-Akureyri — the way you'd learn a noun's gender.

Notice that two look-alike towns split: í Keflavík but á Húsavík, both ending in -vík ("bay"). That split is not random — it follows a geographic line, which we'll get to — but from the learner's chair it's simply: memorise each one.

Place names decline — til and frá change the shape

This is the part with no English parallel. English place names are inert: to Reykjavik, from Reykjavik, Reykjavik's harbour — the name never changes. Icelandic place names are ordinary nouns and so they decline for case. After til ("to") they go genitive; after frá ("from") and í/á in the location sense they go dative.

The accents survive every form — Reykjavík → Reykjavíkur, Ísafjörður → Ísafjarðar / Ísafirði — and dropping one is a spelling error, not a stylistic slip. The -ur in Reykjavíkur and the -ar in Akureyrar are genitive endings, not part of the base name.

Regions and natural features take í too

Beyond towns, regions, valleys, and fjords generally take í when you mean the area itself — í Eyjafirði ("in Eyjafjörður," the fjord/region), í Mýrdal, í Skagafirði. This produces a subtle and useful contrast: the same root can take í for the surrounding region and á for the town inside it.

The classic minimal pair is Siglufjörður: á Siglufirði refers to the town of Siglufjörður (it takes á), while í Siglufirði would refer to the fjord itself. Same name, different preposition, different referent — town versus body of water.

The partial pattern: the chaos is half-learnable

Now the payoff, the thing competitors leave out as "just memorise it." The assignment is lexical, yes — but it is not evenly random. There is a real, learnable tendency, and it cuts the memorisation roughly in half.

Tendency 1 — natural-feature names lean toward á. Place names that are a natural feature — ending in -foss ("waterfall"), -eyri ("sandspit"), -nes ("headland"), -staðir ("steads/farms"), or built on a hill or open feature — tend to take á: á Selfossi, á Akureyri, á Akranesi, á Egilsstöðum. The intuition is geographic: you are on a headland, on a spit, on the place where the waterfall is.

Tendency 2 — a geographic line for -vík towns. For the many towns ending in -vík ("bay"), usage splits along a rough line across the country: roughly from Vík í Mýrdal westward and northward up to Ísafjarðardjúp, the towns take í (í Reykjavík, í Keflavík, í Bolungarvík); from Hólmavík eastward and southward around through the east, they take á (á Húsavík, á Grenivík). The line is historical and not perfectly tidy, but it explains why two identical-looking -vík names split the way they do.

Be honest with yourself about the limits: the tendencies are tendencies, not laws, and there are exceptions in both directions (Akranes, a -nes, takes á as predicted; but you still meet í-names that "should" be á and vice versa). For any place you'll use often, learn its preposition as a fact. For a place you've never heard, the pattern gives you a sensible default.

English vs Icelandic

Two clean contrasts. First, English has one locative preposition for places — in — and it never varies: in Reykjavik, in Akureyri, in Iceland. Icelandic forces a binary choice, í or á, fixed per place and unpredictable, plus á for the country itself (á Íslandi). Second, English place names are frozen, but Icelandic ones inflect — til Reykjavíkur, frá Akureyri — so you must learn not just the preposition but the genitive and dative shapes. The combined effect is that a single English "in Reykjavik" corresponds to a small bundle in Icelandic: í Reykjavík (in), til Reykjavíkur (to), frá Reykjavík (from).

Common Mistakes

"In Iceland" is á Íslandi, not í Íslandi. Islands take á, and the noun is in the dative.

You can't pick one preposition for all towns. Reykjavík takes í, Akureyri takes á — each is fixed and must be learned with the name.

Place names decline. After til the name goes genitive — Reykjavíkur, Akureyrar — never the bare nominative.

Til takes the genitive but frá takes the dative. Don't carry the genitive Akureyrar over to frá; it's frá Akureyri.

When in doubt about a -eyri, -foss, -nes, or -staðir name, the natural-feature tendency points to á — and á Akureyri is the canonical example.

Key Takeaways

• "In Iceland" is á Íslandi (the country takes á, dative Íslandi) — never í Íslandi.
• The í/á choice with town names is lexicalised: learn it with the name. í Reykjavík, í Keflavík, í Hafnarfirði vs á Akureyri, á Selfossi, á Egilsstöðum, á Húsavík.
• Place names decline: til + genitive (til Reykjavíkur, til Akureyrar), frá + dative (frá Akureyri). Accents survive every form.
• Regions/fjords take í (í Eyjafirði); the same root can split — á Siglufirði (town) vs í Siglufirði (fjord).
• The chaos is half-learnable: natural-feature names (-foss, -eyri, -nes, -staðir) lean to á, and -vík towns split along a rough geographic line. Use the tendency as a first guess, then memorise.