| Inovecká | 955 01 | Postcode Inovecka (street) » Topolcany » Slovakia |  |
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| Inovecká | 911 01 | Postcode Inovecka (street) » Trencin » Slovakia | | |
| Inovecká | 953 01 | Postcode Inovecka (street) » Zlate Moravce » Slovakia | | |
| Internátna | 974 04 | Postcode Internatna (street) » Banska Bystrica » Slovakia | | |
| Invalidská | 917 01 | Postcode Invalidska (street) » Trnava » Slovakia | | |
| Inžinierska | 040 11 | Postcode Inzinierska (street) » Kosice » Slovakia | | |
| Ipeľ | 985 26 | Postcode Ipel » Poltar » Slovakia | | |
| Ipeľka | 985 41 | Postcode Ipelka » Lucenec » Slovakia | | |
| Ipeľská | 821 07 | Postcode Ipelska (street) » Bratislava » Slovakia | | |
| Ipeľská | 040 11 | Postcode Ipelska (street) » Kosice » Slovakia | | |
| Ipeľská | 010 01 | Postcode Ipelska (street) » Zilina » Slovakia | | |
| Ipeľské Predmostie | 991 10 | Postcode Ipelske Predmostie » Velky Krtis » Slovakia | | |
| Ipeľské Úľany | 935 82 | Postcode Ipelske Ulany » Levice » Slovakia | | |
| Ipeľský Sokolec | 935 75 | Postcode Ipelsky Sokolec » Levice » Slovakia | | |
| Irisová | 821 07 | Postcode Irisova (street) » Bratislava » Slovakia | | |
| Irkutská | 851 10 | Postcode Irkutska (street) » Bratislava » Slovakia | | |
| Irkutská | 040 12 | Postcode Irkutska (street) » Kosice » Slovakia | | |
| Iršajská | 831 01 | Postcode Irsajska (street) » Bratislava » Slovakia | | |
| Iskerníková | 841 05 | Postcode Iskernikova (street) » Bratislava » Slovakia | | |
| Istebné | 027 53 | Postcode Istebne » Dolny Kubin » Slovakia | | |
| Istebnícka | 911 05 | Postcode Istebnicka (street) » Trencin » Slovakia | | |
| Istebník | 911 05 | Postcode Istebnik » Trencin » Slovakia | | |
| Istrijská | 841 07 | Postcode Istrijska (street) » Bratislava » Slovakia | | |
| Ivachnová | 034 83 | Postcode Ivachnova » Ruzomberok » Slovakia | | |
| Ivana Blazeviča | 851 10 | Postcode Ivana Blazevica (street) » Bratislava » Slovakia | | |
