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Introduction
The office of the president, along with the Statistical Yearbook, maintains lists of areas and administrative mutations. We have synthesized these into coherent annual lists ("geo code vintages") at the two levels, which you can use to answer questions like "at time T, what are the component cities C of region R? We account for the three possible circumstances:
- The boundaries of an existing area change, but its name is retained -- Replace the area by declaring a new geo code, and substitute into the "after" vintage.
- A new area is created, usually in conjunction with the redefinition of an existing area -- Declare a new geo code, and add to the "after" vintage.
- An existing area is terminated, usually because it has fissioned -- Retire the geo code from the "after" vintage.
Note that a geo code may remain in statistical use even after the area has been terminated as an administrative entity. We do not double-guess our historical sources.
Update, 12 January 2024
Upon review, we identified a superfluous geo code (viz., ITWN_TOFF) which we had originally created to aggregate statistical areas in a way that ultimately proved unnecessary. No Data Buffet time series use this geo code. To avoid distraction, we have deleted it from the reference file (2015) linked below.
Summary of mutations
Table 1. Counts of areas (not geo codes) at each geo level, and mutations between the vintages.
| | 2015 | 2011 | Replace | Add | Retire |
|---|
| Province |
2 |
2 |
0 |
0 |
0 |
| County |
13 |
14 |
0 |
0 |
1 |
| Provincial municipality (city) |
3 |
3 |
0 |
0 |
0 |
| Special municipality (city) |
6 |
5 |
0 |
1 |
0 |
Specific mutations
Table 2. Provinces retired.
Table 3. Provinces added.
Table 4. Counties retired.
| County | Code | Province | Code | Note |
|---|
| Taoyuan County |
ITWN_TO |
Taiwan Province |
ITWN_TWNP |
Taoyuan has been elevated in status to a special municipality |
Table 5. Counties added.
| County | Code | Province | Code | Note |
|---|
| *none* |
|
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|
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Table 6. Provincial municipalities (cities) retired.
| City | Code | Province | Code | Note |
|---|
| *none* |
|
|
|
|
Table 7. Provincial municipalities (cities) added.
| City | Code | Province | Code | Note |
|---|
| *none* |
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Table 8. Special municipalities (cities) retired.
Table 9. Special municipalities (cities) added.
| City | Code | Note |
|---|
| Taoyuan City |
ITWN_TAOY |
Previously Taoyuan County |
Reference files
The reference file is an Excel workbook with a separate worksheet for each geo type, tabulating (as applicable) the area name, type, Data Buffet geo code, and parent state.
The "after" geo vintage:
The "before" geo vintage:
References
See also
Updates to this article
- 9 Jan 2020 - Initial version.
- 12 Jan 2024 - Corrected reference file 2015 to delete geo code ITWN_TOFF.
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