Lists data fields that differ from the last major version (see versions above). Inherited differences in locales are suppressed, except where the source locales are different.
| Section | Page | Header | Code | Locale | Old | New | Level |
| Locale Display Names | Languages (O-S) | R | Root ► root | es | raíz | ▷removed◁ | comprehensive |
| Numbers | Symbols | Grouping Control | Minimum Grouping Digits | es_419 | 2 | 1 | moderate |
| Compact Decimal Formatting | Short Currency | 11-digits-short-one | es_GT | ¤00MRD | ¤00MRD | modern |
| 11-digits-short-other |
| 12-digits-short-one | ¤000MRD | ¤000MRD |
| 12-digits-short-other |
| Units | Length | micrometer | short-displayName | es | µm | μm | moderate |
| short-one-nominative | {0} µm | {0} μm |
| short-other-nominative |
| narrow-displayName | µm | μm | modern |
| narrow-one-nominative | {0}µm | {0}μm |
| narrow-other-nominative |
| Mass and Weight | microgram | short-displayName | µg | μg | moderate |
| short-one-nominative | {0} µg | {0} μg |
| short-other-nominative |
| narrow-displayName | es_419 | µg | μg | modern |
| narrow-one-nominative | {0}µg | {0}μg |
| narrow-other-nominative |
| Other Units | milligram-ofglucose-per-deciliter | long-displayName | es | ▷missing◁ | miligramos por decilitro | moderate |
| es_419 | mg/dL |
| es_MX | miligramos por decilitro |
| es_US |
| long-one-nominative | es | {0} miligramo por decilitro |
| long-other-nominative | {0} miligramos por decilitro |
| short-displayName | mg/dL |
| short-one-nominative | {0} mg/dL |
| short-other-nominative |
| milligram-per-deciliter | long-displayName | miligramos por decilitro | ▷removed◁ |
| es_419 | mg/dL |
| es_MX | miligramos por decilitro |
| es_US |
| long-one-nominative | es | {0} miligramo por decilitro |
| long-other-nominative | {0} miligramos por decilitro |
| short-displayName | mg/dL |
| short-one-nominative | {0} mg/dL |
| short-other-nominative |
| Compound Units | 10p-6 | narrow | µ{0} | μ{0} |
| short |